Showing posts with label Computers. Show all posts
Showing posts with label Computers. Show all posts

computers and society

The decade of the 1980's saw an explosion in computer technology and computer usage that deeply changed society.  Today computers are a part of everyday life, they are in their simplest form a digital watch or more complexly computers manage power grids, telephone networks, and the money of the world.  Henry Grunwald, former US ambassador to Austria best describes the computer's functions, "It enables the mind to ask questions, find answers, stockpile knowledge, and devise plans to move mountains, if not worlds." Society has embraced the computer and accepted it for its many powers which can be used for business, education, research, and warfare.


The first mechanical calculator, a system of moving beads called the abacus, was invented in Babylonia around 500 BC. The abacus provided the fastest method of calculating until 1642, when the French scientist Pascal invented a calculator made of wheels and cogs.  The concept of the modern computer was first outlined in 1833 by the British mathematician Charles Babbage.  His design of an analytical engine contained all of the necessary components of a modern computer: input devices, a memory, a control unit, and output devices.  Most of the actions of the analytical engine were to be done through the use of punched cards.  Even though Babbage worked on the analytical engine for nearly 40 years, he never actually made a working machine.


In 1889 Herman Hollerith, an American inventor, patented a calculating machine that counted, collated, and sorted information stored on punched cards.  His machine was first used to help sort statistical information for the 1890 United States census.  In 1896 Hollerith founded the Tabulating Machine Company to produce similar machines.

In 1924, the company changed its name to International Business Machines Corporation. IBM made punch-card office machinery that dominated business until the late 1960s, when a new generation of computers made the punch card machines obsolete.

The first fully electronic computer used vacuum tubes, and was so secret that its existence was not revealed until decades after it was built.  Invented by the English mathematician Alan Turing and in 1943, the Colossus was the computer that British cryptographers used to break secret German military codes. The first modern general-purpose electronic computer was ENIAC or the Electronic Numerical Integrator and Calculator. Designed by two American engineers, John Mauchly and Presper Eckert, Jr., ENIAC was first used at the University of Pennsylvania in 1946.


The invention of the transistor in 1948 brought about a revolution in computer development, vacuum tubes were replaced by small transistors that generated little heat and functioned perfectly as switches. Another big breakthrough in computer miniaturization came in 1958, when Jack Kilby designed the first integrated circuit. It was a wafer that included transistors, resistors, and capacitors the major components of electronic circuitry. Using less expensive silicon chips, engineers succeeded in putting more and more electronic components on each chip. Another revolution in microchip technology occurred in 1971 when the American engineer Marcian Hoff combined the basic elements of a computer on one tiny silicon chip, which he called a microprocessor. This microprocessor the Intel 4004 and the hundreds of variations that followed are the dedicated computers that operate thousands of modern products and form the heart of almost every general-purpose electronic computer.


By the mid-1970s, microchips and microprocessors had reduced the cost of the thousands of electronic components required in a computer. The first affordable desktop computer designed specifically for personal use was called the Altair 8800, first sold in 1974.  In 1977 Tandy Corporation became the first major electronics firm to produce a personal computer.  Soon afterward, a company named Apple Computer, founded by Stephen Wozniak and Steven Jobs, began producing computers.  IBM introduced its Personal Computer, or PC, in 1981, and  as a result of competition from the makers of clones the price of personal computers fell drastically.  Just recently Apple Computer allowed its computers to be cloned by competitors.


During this long time of computer evolution, business has grasped at the computer, hoping to use it to increase productivity and minimize costs.  The computer has been put on assembly lines, controlling robots.  In offices computers have popped up everywhere, sending information and allowing numbers to easily be processed.  Two key words that apply today are downsizing and productivity.  Companies hope the increase worker productivity, meaning less working which then allows for downsizing.  The computer is supposed to be the magic wand that will make productivity shoot through the roof, but in some cases the computer was a waste of time and money.


Reliance Insurance is an example of computer technology falling flat on its face, wasting a great deal of money, while producing little or no results.  "Paper Free in 1983"  was the slogan Reliance used because the it had just spent millions of dollars to put computers everywhere and network them.  The employees had E-mail and other programs that where to eliminate paper and increase productivity.  The company chiefs sat back and waited for a boom in productivity that never arrived.


Other examples of the disappointments of computer are not hard to find.  Citicorp bank lost 0 million dollars developing a system in the 1980's that gave up to the  minute updates on oil prices.  Knight-Ridder tried to develop a home shopping network on the television, and lost million.  Wang laboratories almost went under when they put all of their resources toward developing imaging technology that no one wanted.  Ben & Jerry's ice cream put in an E-mail system and out of 200 employees less than 30% used the system.  Everything attempted then is currently very common today; on-line services provide stock and commodities quotes, QVC is a home shopping channel on cable television, almost every picture in a magazine has been retouched with imaging technology, and even JRHS has an E-mail system that seems to be valuable.


Other corporations have seized computer technology and used it to reduce costs, but usually the human factor is lost. The McDonalds fast food chain is an example of a company that has embraced computers to help productivity and lower operating costs.  The McDonalds kitchen has become a computer timed machine, "You don't have to know how to cook, you don't have to know how to think.  There's a procedure for everything and you just follow the procedure" .  The workers have in essence become robots controlled by the computer to achieve maximum productivity.  The computer knows the procedure and alerts the worker of events in the procedure and all the worker must do is execute what the beeper of buzzer means.  With such little knowledge of the making of the food, workers have become disposable, "It takes a special kind of person to be able to move before he can think.  We find people like that and use them until they quit." .


McDonalds managers work even more closely with the computers that control them.  The computer generates a graph of expected business and tells the manager how many people to schedule and when, all the manager does is fill in the blanks with names.  McDonalds computers also keep close track of sales and expenditures, "The central office can check . . . how many Egg McMuffins were sold on Friday from 9 to 9:30 two weeks ago or two years ago, either in an entire store or at any particular register."  .  The main  things computers do in a manual job is to speed things up, "Thinking generally slows this operation down." , and for this reason computers have made manual jobs ones of extreme monotony and no creativity.


White collar jobs have remained virtually the same, computers have just helped to enhance creativity and attempted to raise productivity.  E-mail, word processors, spreadsheets, and personal organization programs are widely used by white collar workers.  These programs help to make impressive presentations, communicate, and keep track of everything  so the worker can get more done, and therefore less workers are needed, dropping costs.  This has not happened, over the last 30 years white collar worker productivity has remained the same, while blue collar productivity has almost quadrupled.  This is due mainly to the fact that white collar workers are required to think and adapt to situations quickly, which computers at the moment are unable to due, they only follow code to give a planned response.  The blue collar job requires less knowledge and skill, and so is easily replaceable by a computer.


Computers though have not been a failure in business, they allow information to be shared very quickly.  The home office is a product of computers, people can work from home instead of going into an office.  This has not become very popular due to the lack of touch between people, the loss of contact.  It is the human factor that helps to make business run, the random thought that saves the day, something a computer is incapable of doing.  Computers may help quicken business, but they will never replace people, only reduce their knowledge or creativity by automating the process.


Another form of computers is attempting to totally eliminate people from the picture.  Expert systems are large mainframe computers that have the knowledge of an expert individual loaded into it, and makes decisions that are very complex.  An expert in field is chosen and interviewed for sometimes over a year about their job and how they make decisions.  All of this knowledge is refined and put into a computer.  Another person then enters some statistics into the finished machine and magically a large printout will come out of the machine in minutes with the answers.  Expert systems are used mainly in large investing corporations, but some have been developed to help diagnose diseases.  The hope is one day a patient will lie down and a couple of sensors and probes will go over the body and then a computer printout will have the name of your illness and the drug to cure it.  Expert systems have been used very little mainly due to their high price and because of the lack of trust in them.


Computers have also reached into other places besides business, schools.  Children sit in front of computers and are drilled or taught about certain subjects selected by the teacher.  This method of teaching has come under fire, some people believe the computer should be a tool not a teacher, while others believe why learn from a normal teacher when a computerized version of the best can teach.  The technology of today could allow for a teacher in another country to teach a class through video confrencing.  The attempts to spread computer technology into the class room have produced results and taught lessons as to how computers should be applied.


The Belridge school district in McKittrick California was one of the most technological school districts in America.  Every student had two computers, one at school and one at home, which contained many brand new teaching programs.  The high school had a low powered television station that broadcasted every day.  The classes were small and parent involvement was high.  Even with all of these wonderful things one-third of the first grade class was below the national average in standardized tests after the first year.  Parents were enraged that after all of  the money spent nothing had happened, that the technology hadn't made the children become smarter, and so all of the computers were gone the next year and traditional teaching was put back in place.


Belridge is an extreme example of people expecting the computers to do magic and make the children learn faster and better, much like companies hoped to raise productivity.  The children were left to learn from the computer, which they did, but nothing changed things actually got worse.  One parent realized, ". . . good teachers are the heart and soul of teaching." , because computers can only present facts and explain them to a certain extent, where as a good teacher can explain to the student in many ways.


The US has about 2.7 million computers for 100,000 schools, a ratio of about 1 computer for every 16 students.  Experts say that, "Computers work best when students are left with a goal to achieve. . ." , and students are allowed to achieve this goal with proper direction from a teacher.  After many attempts in the 1980's to put computers into the classroom a Presidential Plan was drawn up:


1.  Give computers to teachers before students.


2.  Move them out of the labs and into classrooms.


3.  One workstation at least for every two or three students.


4.  Still use flashcards for practice.


5.  Give teachers time to restructure around computers.


6.  Expect to wait 5 to 6 years for change.


 


This plan was to help guide the use of computers into the classroom, and maximize their ability as learning tool.  The computer will enhance the future classroom, but it cannot be expected to produce results quickly.  One thing the use of computers in the classroom will help with is the fear of computers and their ability to confuse people.  Early exposure to computers will help increase computer use in society years from now.


The biggest network of connected computers is broadly referred to as the internet, information superhighway or electronic highway.  The internet was started by the Pentagon as a way for the military to exchange information through computers using modems.  Over the years the internet has evolved into a public resource containing limitless amounts of information.  The main parts of the internet are FTP (file transfer protocol), gopher, telnet, IRC (internet relay chat), and the world wide web.  FTP is used to download large files from one computer to another quickly.  Gopher is much like the world wide web, but without the graphical interface.  Telnet is a remote computer login, this is where most of the hacking occurs.  The IRC is just chat boards where people meet and type in there discussions, but IRC is becoming more involved with pictures of the people and 3-D landscapes.  Besides IRC, these internet applications are becoming obsolete due to the world wide web.


The most popular of the internet applications is the world wide web or WWW.  It is a very graphical interface which can be easily designed and is easy to navigate.  The WWW contains information on everything and anything possibly imaginable.  Movies, sound bytes, pictures, and other media is easily found on the WWW.  It has also turned into a business venture, most large businesses have a "page" on the WWW.  A "page" is a section of the WWW that has its own particular address, usually a large business will have a server with many "pages" on it.  A sample internet address would be "http://www.sony.com/index.html", the http stands for hypertext transfer protocol, or how the information will be transferred.  "www.sony.com" is the serve name, it is usually a mainframe computer with a T-1 up to T-3 fiber optic telephone line.  The server is expensive not because of the computer but because of the telephone line, a T-1 line which transfers up to 150 megabytes of information per second costs over 00 a month, while a T-3 line transferring 450 megabytes of information can cost over ,000 a month.  The "index.html" is the name of the page on the server, of which the server could have hundreds.


The ability for all of this information has made for a virtual society.  Virtual malls, virtual gambling, virtual identities, and even virtual sex have sprung up all over the internet wanting your credit card number or your First Virtual account number.  First Virtual is a banking system which allows so much money to be deposited at a local bank to be spent on the internet.  Much of the internet has become a large mail order catalog.  With all of these numbers and accounts, questions come up about the security of a persons money and private life, which aren't easily answered.


Being safe is a new craze today, protection from hackers and other people who will steal personal secrets and then rob someone blind, or protection from pornography or white supremacists or millions of other things on the internet.  The recent communications bill that passed is supposed to ban pornography on the internet, but the effects aren't apparent.  There are still many US "pages" with pornography that have consent pages warning the user of the pornography ahead.  Even if the US citizens stopped posting pornography, other nations still can and the newsgroups are also international.  Programs such as Surf Watch and Internet Nanny have become popular, blocking out pornographic sites.  The main problem or beauty of the internet is the lack of a controlling party, "It has no officers, it has no policy making board or other entity, it has no rules or regulations and is not selective in terms of providing services." .  This is a society run by the masses that amounts to pure anarchy, nothing can be controlled or stopped.  The internet is so vast many things could be hidden and known to only a few, for a long time if not forever.  The real problem with controlling the interenet is self control and responsibility, don't go and don't see what you don't want to, and if that amounts to a boring time, then don't surf the net.


When speaking of computers and the internet one person cannot go unmentioned, Bill Gates, the president of Microsoft.  Microsoft has a basic monopoly on the computer world, they write the operating system and then the applications to run of the system, and when everyone catches up, they change the version.  Bill Gates started the company in the early 1980's with DOS, or Disk Operating System, which just recently was made obsolete by Windows 95.  Bill Gates has now just ventured into the internet and is now tangling with Netscape, the company with the Internet monopoly.  Netscape gives away its software for free to people who want the basic version, but a version with all of the bells and whistles can be purchased.  Microsoft is hard pressed to win the internet battle, but will take a sizable chunk of Netscape business.  Bill Gates will likely keep running the software industry, with his recent purchase of Lotus, a popular spreadsheet, he further cornered the market.


Computers are one of the most important items society posses today.  The computer will be deeply imbedded in peoples lives even more when the technology progresses more and more.  Businesses will become heavily dependent as video confrencing and working from home become increasingly more feasible, so businesses will break down from large buildings into teams that communicate electronically.  Schools may be taught by the best teachers possible and software may replace teachers, but that is highly unlikely.  The internet will reach into lives, offering an escape from reality and an information source that is extremely vast.  Hopefully  society will further embrace the computer as a tool, a tool that must be tended to and assisted, not left to do its work alone.  Even so computers will always be present, because the dreams of today are made with computers, planned on computers, and then assembled by computers, the only thing the computer can't do is dream, at least right now.


 

Computers and Technological Innovations: A Way to Ease Life

Tired of the boring and routine work at the office? Bored with the bountiful paper works? Stressed in filing documents in cabinets and drawers? If so, you are one of the millions of employees who got hooked up with the traditional office operations and records keeping. To ease your burden, you need to use computers and other technological innovations to automate your operation and to ease your work load.


Scientists, manufacturers and companies continue to conduct research to innovate equipment and machines to give relief and comfort to everyday operations and routines, both at home, at school and at work. No matter where you are, what life you have and what work you do, you cannot escape technology. It is anywhere and everywhere you go.


Computers become a way of life for everyone. Majority of us cannot live and feel helpless without them. It cannot be denied that it has become a vital aspect in business, at home and in our personal lives.

It enables everyone to communicate with friends, relatives, family members and loved ones despite the distance between them. It helps students in their assignments and research works. It provides comfort in filing and tracking of records, thereby saving time and money. It lets you purchase items via electronic commerce and enables you to pay bills through Internet banking. It makes data analysis fast and easy by a click of a computer mouse. It lets you keep track of your inventory and logistics.

Other technological innovations and their associated significance:


Cellular phones and iPhones. Enable users to communicate with colleagues, office mates, friends, family members and loved ones anytime and anywhere.
Washing Machines.

Let homemakers do their laundry at less time and effort.

Photocopiers. Enable students, professionals, employees and ordinary individuals to copy vital documents.


Airbags. Can save the lives of both the driver and the passenger during car accidents.


Plasma television (TV). Enable you to watch movies, television programs and news at the convenience of your home.


Digital cameras. Let you capture important events and precious moments with a click of a button.


Hybrid automobiles. Enable users to travel and go places with less gasoline and without the danger of polluting the environment.
Magnetic Resonance Imaging. Enable doctors to see the presence to cancer cells and tumor.


Nanomedicine. A medical scheme that uses nanorobots to perform biological functions and medical procedures, such as repairing damaged tissues, attacking viruses and cancer cells and cleaning clogged arteries.


Laparoscopic surgery. A single incision surgery performed in a patients’ navel, reducing complications and hastens recovery period.
Closed-circuit television. Used by several companies and organizations to see illegal activities, like robberies, shoplifting, murder, holdup and many more.


Automated teller machines. Let you withdraw money anytime and anywhere.
Hydroponics. An inexpensive gardening method that gives farmers increased production, controllable conditions and less risks of damage crops.


No matter what innovations you choose and used, it is of utmost importance to use them wisely, efficiently and effectively without harming other people and the environment.

Using Technology in Industry - Computers, Touch Screens and Digital Signage on the Factory Floor

There is no getting away from technology they have altered our daily lives, changing the way we live and work. Traditionally devices like computers have only been sited in offices and homes but the advantage of using a processor to control industrial processes is obvious in that it will save money, reduce waste and improve efficiency.


However, computers are not designed to operate in dusty or wet conditions and neither do devices such as LCD displays or other digital signage devices like plasmas.


Industrial computers, touch screens and flat panel industrial TVs are on the market and while they are durable and reliable devices they are not very flexible. Industrial computers for instance are made from extremely reliable but older components with a typical industrial PC having less than a quarter of the processing power of a contemporary desktop.


There are alternative solutions though with standard devices such as computers, printers, LCD TV's, touch screen monitors and other display devices able to withstand the potentially harmful elements of the factory floor by being protected by an industrial computer enclosure or LCD enclosure or printer enclosure etc.


By using standard devices you can decide on the equipment your factory requires rather than buy equipment on the basis that it is the only available that will survive.

Industrial computer cabinets and lcd enclosures will protect any standard device from the harsh elements of the factory floor ensuring it will last just as long as an industrial device but with an enclosure that when the computer, printer or LCD does finally fail (they all do eventually) - another off-the-shelf device can be slotted in within moments.

Printers Escape From The Sides Of Computers By Wireless Technologies

Recent technological development has reached levels which no one would have predicted or expected some two decades ago. Can you imagine a wireless printers? This is now a reality and not a dream or fiction. They are there and you can place them somewhere in your office without any cables connecting them to the computer and they will print out copies immediately when you input the print command to your computer. Computer printers operate in almost the same manner as wi-fi internet operates. The computer in this case sends signals to the printer and the advantages and disadvantages of any wireless devices may be encountered here but, this notwithstanding, these printers are still a viable printing solution. They operate in the same way the wireless technology allows you to change channels, increase volume and switch off your Tvs using a remote control. Just the way flat screen televisions have been redesigned to incorporate more features at their reduced physical size, these printers occupy a smaller space in the office just the way the flat screen televisions do.

The main advantage of these printers is that there will be no cables trailing the walls or floors of your room. The usual or common types of printers have very many cables which connect them to the power supply and to the computer and they occupy a lot of space. Once the cables are lying on the floor, they can trip people and can make them fall and get injured. As the cables are stepped upon - which is likely to happen when they are lying on the floor - they can easily be damaged and rendered unusable. The printouts are of very clear quality and their only difference with all the other printers is only that they have no cable connecting them to the computer, as stated earlier.

You can get mono laser, standard color or multi functional wireless printers at the leading online stores, but their prices are relatively higher than normal printers. The secret to getting the best deals is comparing prices from various online stores. You should read the features of each carefully and the product reviews, so that you acquire adequate information on the pros and cons of each of the various brands on the market. As is the case with all other products, the manufacturers will try to give their product the best description, so you should be sure to get information from independent reviewers. The brand new ones are usually backed by the manufacturers warranty and will give you long term and efficient service.

You will need to install a wireless printer program in your computer to enable the computer to print with these printers. The installation is not very different from the traditional printer program installation and takes only a few minutes. This will enable the computer to print from all compatible external hard drives. Modern printers and computers have high speed USB ports to make this easy and possible.

Computers and Technology in the Academic Learning of Young Children

In today's world, computers have become a familiar fixture in the daily lives of children and adolescents, offering a wide range of learning and entertainment tools.


While surveys have indicated that boys are heavier users of computer games and visit websites more often than girls, no gender differences have emerged for chatting, using e-mail, or doing schoolwork on the computer. Additionally, both teenage boys and girls have expressed equal confidence in their computer skills.


On average, parents estimate that their school-age children and adolescents use the computer approximately 1.5 hours per day. Computers, electronic games and toys, and technology in general largely influence and affect the lives of children. Technology has thus proven to be largely capable of enriching the lives of children, especially in the areas of academic and social learning and development.


Computers for instance, can have rich cognitive and social benefits.

Children as young as 3 years of age like computer activities and are capable of typing in simple commands on a standard keyboard. Additionally, in today's classrooms, small groups often gather around the machine, and children more often collaborate while working with the computer instead of using traditional paper and pencil methods.

As soon as children start to become literate (being able to read and write), they can make use of the computer for word processing. This lets them write without struggling with handwriting, and they can revise text meanings and style, and check their spelling. As a result, children tend to worry less about making mistakes, and their written products end up longer and of higher quality.


Specially designed computer languages introduce children to programming skills.

With the support of adults, children's efforts with computer programming can lead to improved concept formation, problem solving and creativity. Furthermore, as children must detect errors in their programs to make them work, programming will assist them in reflecting on their though processes. This will inevitably lead to gains in meta-cognitive knowledge and self-regulation. Also, while programming, children are particularly likely to collaborate, persist in the face of challenge, and demonstrate positive attitudes toward learning. This is consistent with Vygotsky's theory in showing that social interaction supporting children's mastery of challenging computer tasks is capable of fostering a wide range of higher cognitive processes.

Children and adolescents spend much time using home computers purely for entertainment purposes. Many computer games emphasize speed and action in sometimes violent plots where children advance by shooting at and evading enemies. Children additionally play more complex exploratory and adventure games with themes of conquest and aggression and sports games. These include football and soccer. Children likewise enjoy simulation games, for example creating and caring for virtual pets (which require attention to "stay alive"), entering virtual realities (such as an ecosystem where the player mutates plants and animals into new species), and role-playing characters.


Speed-and-action computer games cultivate attentional and spatial skills in both boys and girls. However, while offering opportunities for learning, extensive playing of simulation games might risk blurring the distinction between virtual and real life.


Many youths use the computer to communicate. While using the internet causes some potential for causing disengagement from real life, it does hold much value in letting users acquire computer skills, information, and enabling communication.

Upgrading Computers

In the world of technology, there is always a scope for improvisation and that continuously happens in our day to day lives. Some of us are aware and keep ourselves updated about all the new versions available while there are others who are in the dark. Computers need to be updated on a regular interval or else they get old and when it comes to technology, ‘old is never gold’. The Speed of a computer matters the most and there are several factors responsible for how quick a PC responds. Equally important is to protect our PC’s from security threat as all the computers in this day and age is connected to the internet and since not all of us with computers are technical experts, one needs the guidance of an expert for any kind of modifications.

There are various service providers for PC’s in the market today but not all of them guarantee you excellent services.

As laymen when it comes to software and hardware knowledge, there are chances that you could be tricked by those who always keep an eye on your pockets. But, then there are others who care for their reputation and accordingly provide quality assistance. Chicago Computer Repair being one of the few names in the market that have devoted themselves to customer satisfaction in the line of computer business. What differentiates them is their continuous approach towards creating user friendly software and high-end Computer Repair Tools. One of their quality products being the Remote Data Backup hardware; it is uncomplicated and adds value to your personal computer. We are all aware how important all our data we save in our computer is and anything going missing could cost us a fortune and if we are unfortunate enough. 

Buying a computer is expensive and it would be foolish to keep investing a lot when products are available for cheaper prices. The Computer Repair Rates offered at Chicago Computer Repair are just as prices are much lower than the market rates. Problems with computers too never come informed and if your system collapses in the middle of something important, it could leave you frustrated and confused. You might regret at that moment if you do not have a dedicated service provider for your PC. So it is always wise to have someone who can help you with your computer in troubled times and at any hour of the day.


The Benefits Of Cloud Computers Over Yesterday's Technologies

Cloud computing is a new technology and so granted it is going to have a number of flaws. You don't want to linger too long on the possible drawbacks but instead look at the advantages. Using a cloud platform does hold a number of excellent advantages. Because of these advantages it means that companies are looking more and more to adopt cloud computing for internet presence and infrastructure. Hosting companies are now looking at building more of there products around cloud platforms.


The scalability of this system means you do not have to go and source hardware and then get it set up and commissioned just because your business has a sudden pick up. After a few weeks you don't have to take your new hardware back out of service as demand has dropped off. You can instead just sit back and take it cool by subtracting and adding capacity as you need to.

Cloud computing uses a pricing model based on consumption. Resulting in you paying for the resources used, which is the downside with dedicated servers.

As you don't need to buy extra software licenses, hardware or set up costs it makes the implementation easy. Meaning that a company can use a cloud computing platform for a lot less than that of a similar on site solution. This streamlines your time and money by being able to have accurate forecasts of costs.


Being able to have skilled professionals available with any new technology that gets popular is important. It is not uncommon for big vendors to offer customers a reliable service with these new technologies. The solution is large enough to be able to supply datacentres with endless amounts of storage and computing power.


Internal resources are also given greater control.

By giving the cost and burden of managing the servers to a third party it allows for the in house team to work on more important things. With this you can also save money on staff training. Using a third party cloud management system solves lots of problems.

You will enjoy increased quality of service. Particularly if normally you happened to have network outages you had to fix yourself, which can in some cases be simple or take hours or even days. A good cloud host will offer you an SLA and will take care of any issues. Any technical issues should therefore be dealy with very quickly. You will certainly sleep better at night, knowing someone is taking care of things for you.


Security is normally an even greater priority in a cloud situation than within an internal system. People think that because it is not just a single server with a hard disk in that it is wide open and everyone can access it. The data is held in a way that proven cryptographic services are involved to authenticate users. If your very worried you could encrypt the data before transmitting it to a third party. This extra encryption will cause considerable increased load on your cloud instance meaning that you could end up paying alot more for the extra CPU and memory needed.

Refurbished Technology and Computers

Why buy 'new' computer equipment when you can get the same refurbished computer at up to 80% savings and there is no difference in the quality or warranty?


Statistics show that people who have already bought a factory refurbished computer will never buy 'new' computer again! Manufacturers are so sure about their refurbished computer equipment that they offer the original warranties.


Exactly what is considered factory refurbished computer equipment? A lot of things can be labeled factory refurbished. So frivolous are some that it's silly enough to make you laugh! Consumer laws prevent manufacturers from selling anything considered factory refurbished as new, so the second consumer gets the best deal and it's just like a new computer!


For example, most major retail stores offer a 30 day money back guarantee on their computer equipment and some consumers take advantage of this.

So when the new computer is returned, the manufacturer inspects the product and repackages it like new. But it can't be sold as new now so you get a great price with the original warranty, now it's considered a refurbished computer.

Other reasons may be the box was damaged in shipment and so it was returned, a slight defect, the defective part is replaced by the manufacturer, tested and then repackaged just like new. Maybe a minor cosmetic blemish on the casing that was corrected. Demonstration units are also considered factory refurbished computers. They are also inspected, tested and repackaged. The box was simply opened or brand new items that have been overstocked are also labeled factory refurbished.


It's hard to tell the history of each and every refurbished computer item but whatever the reason for the refurbished label you can be sure that the computer equipment has been inspected and serviced by the manufacturer then tested and repackaged to meet original product specifications, just like a new computer.

And like I said before, all computer equipment merchandise is warranted by the original manufacturer unless otherwise specified. Why buy a refurbished computer?

Well, to save MONEY! Why not get the best value while getting the exact same computer equipment? Also, you get the original manufacturer's warranty and get a much, much lower price on your new computer.


Now with refurbished computer equipment you can afford that item which has been just out of your reach because it cost too much. And you will get the same performance! Actually refurbished items have a much lower defect rate than new ones. Only one in ten units that come back for repair is usually a factory refurb! That is because they are closely tested before they are sold. The only difference you may notice is a little label on the outside of the box or simply a brown box. So think hard before your purchase, are you shopping smart? Marcus - Sales and Technical Advisor to Customers @ Electro Computer Warehouse Cheap Computers, Refurbished Computers, Used Computers, cheap refurbished dell computers, refurbished notebooks and laptops, cheap laptops, refurbished dell computers


Electro Computer Warehouse - North America's Largest Reseller of Cheap Computers, Used Computers and Refurbished Computers and Laptops


 

Refurbished Computers- The Technology Which Everyone Can Buy'

Refurbished Computers at prices not found anywhere else Electro Computer Warehouse
What do we all know about new computers? Is that in a few months, a thousand dollar brand new computer can go for a half a price that is approximately 500 dollars. If you want to buy a used computer you will see that you can find many cheap deals on the internet, but used computers may not be of even quality. So when you are deciding to buy a used refurbished computer you must know that you are taking some risks because most probably it was build with the cheapest components.
There are also times when a refurbished computer turn out to be ok and it may work perfectly for years so then it is indeed a good investment. So to make sure it will be a good investment when you buy a refurbished computer you should ask for a guarantee before you purchase your product. You might consider that this warranty will be a little bit hard to obtain as the company that sell used and refurbished computers have no control over how long the product last. However if you are going to buy a used computer you might consider buying the computer that is slightly outdated because you have more chances to not have any problems with it.
Verify if the brand is reputed and always buy a good reliable brand. Read about customer service experience for that specific computer issues. And if you say from example you have bad luck with the hard drive, or memory, or video card you can always find replacement on the market because the components are not very outdated and the manufacturers still delivers them. But the less outdated a computer is the more probably will run like a brand new computer even if you pay a little bit more than a very cheap used computer. It will worth the money after all.
If you are looking for the safety of information and you consider that a used computer maybe it's not as reliable as a bran new one you might consider of taking backup few times a month or one time depending how often you update your documents or data , because when it happen you must be prepare. You must also know that this can happen to anybody and bad luck is not looking at the computer price or brand.
Anyway nowadays computers and components are much more durable and dependable that they were a few years ago. Therefore, buying a used or refurbished computer is becoming more of a trend and buying a used or refurbished computer can be a great way to save money.

devolpment, of Computers and Technology

Computers in some form are in almost everything these days.  From Toasters to Televisions, just about all electronic things has some form of processor in them.  This is a very large change from the way it used to be, when a computer that would take up an entire room and weighed tons of pounds has the same amount of power as a scientific calculator.  The changes that computers have undergone in the last 40 years have been colossal.  So many things have changed from the ENIAC that had very little power, and broke down once every 15 minutes and took another 15 minutes to repair, to our Pentium Pro 200's, and the powerful Silicon Graphics Workstations, the core of the machine has stayed basically the same.  The only thing that has really changed in the processor is the speed that it translates commands from 1's and 0's to data that actually means something to a normal computer user.  Just in the last few years, computers have undergone major changes.  PC users came from using MS-DOS and Windows 3.1, to Windows 95, a whole new operating system.  Computer speeds have taken a huge increase as well, in 1995 when a  normal computer was a 486 computer running at 33 MHz, to 1997 where a blazing fast Pentium (AKA 586) running at 200 MHz plus.  The next generation of processors is slated to come out this year as well, being the next CPU from Intel, code named Merced, running at 233 MHz, and up.  Another major innovation has been the Internet.  This is a massive change to not only the computer world, but to the entire world as well.  The Internet has many different facets, ranging from newsgroups, where you can choose almost any topic to discuss with a range of many other people, from university professors, to professionals of the field of your choice, to the average person, to IRC, where you can chat in real time to other people around the world, to the World Wide Web, which is a mass of information networked from places around the world.  Nowadays, no matter where you look, computers are somewhere, doing something.


Changes in computer hardware and software have taken great leaps and jumps since the first video games and word processors.  Video games started out with a game called Pong...monochrome (2 colors, typically amber and black, or green and black), you had 2 controller paddles, and the game resembled a slow version of Air Hockey.  The first word processors had their roots in MS-DOS, these were not very sophisticated nor much better than a good typewriter at the time.  About the only benefits were the editing tools available with the word processors.  But, since these first two dinosaurs of software, they have gone through some major changes.  Video games are now placed in fully 3-D environments and word processors now have the abilities to change grammar and check your spelling.


Hardware has also undergone some fairly major changes.  When computers entered their 4th generation, with the 8088 processor, it was just a base computer, with a massive processor, with little power, running at 3-4 MHz, and there was no sound to speak of, other than blips and bleeps from an internal speaker.  Graphics cards were limited to two colors (monochrome), and RAM was limited to 640k and less.  By this time, though, computers had already undergone massive changes.  The first computers were massive beasts of things that weighed thousands of pounds.  The first computer was known as the ENIAC, it was the size of a room, used punched cards as input and didn't have much more power than a calculator.  The reason for it being so large is that it used vacuum tubes to process data.  It also broke down very often...to the tune of once every fifteen minutes, and then it would take 15 minutes to locate the problem and fix it.  This beast also used massive amount of power, and people used to joke that the lights would dim in the city of origin whenever the computer was used.


The Early Days of Computers


The very first computer, in the roughest sense of the term, was the abacus.  Consisting of beads strung on wires, the abacus was the very first desktop calculator.  The first actual mechanical computer came from an individual named Blaise Pascal, who built an adding machine based on gears and wheels.  This invention did not become improved significantly until a person named Charles Babbage came along, who made a machine called the difference engine.  It is for this, that Babbage is known as the "Father of the Computer."


Born in England in 1791, Babbage was a mathematician, and an inventor.  He decided a machine could be built to solve polynomial equations more easily and accurately by calculating the differences between them.  The model of this was named the Difference Engine.  The model was so well received that he began to build a full scale working version, with money that he received from the British Government as a grant.


Babbage soon found that the tightest design specifications could not produce an accurate machine.  The smallest imperfection was enough to throw the tons of mechanical rods and gears, and threw the entire machine out of whack.  After spending 17,000 pounds, the British Government withdrew financial support.  Even though this was a major setback, Babbage was not discouraged.  He came up with another machine of wheels and cogs, which he would call the analytical engine, which he hoped would carry out many different kinds of calculations.  This was also never built, at least by Babbage (although a model was put together by his son, later), but the main thing about this was it manifested five key concepts of modern computers --


· Input device


· Processor or Number calculator


· Storage unit to hold number waiting to be processed


· Control unit to direct the task waiting to be performed and the sequence of calculations


· Output device


Parts of Babbage's inventions were similar to an invention built by Joseph Jacquard.  Jacquard, noting the repeating task of weavers working on looms, came up with a stiff card with a series of holes in it, to block certain threads from entering the loom and blocked others from completing the weave.  Babbage saw that the punched card system could be used to control the calculations of the analytical engine, and brought it into his machine.


Ada Lovelace was known as the first computer programmer.  Daughter of an English poet (Lord Byron), went to work with Babbage and helped develop instructions for doing calculations on the analytical engine.  Lovelace's contributions were very great, her interest gave Babbage encouragement; she was able to see that his approach was workable and also published a series of notes that led others to complete what he prognosticated.


Since 1970, the US Congress required that a census of the population be taken every ten years.  For the census for 1880, counting the census took 71/2 years because all counting had to be done by hand.  Also, there was considerable apprehension in official society as to whether the counting of the next census could be completed before the next century.


A competition was held to find some way to speed the counting process.  In the final test, involving a count of the population of St.

Louis, Herman Hollerith's tabulating machine completed the count in only 51/2 hours.  As a result of his systems adoption, an unofficial count of the 1890 population was announced only six weeks after the census was taken.  Like the cards that Jacquard used for the loom, Hollerith's punched cards also used stiff paper with holes punched at certain points.  In his tabulating machine, roods passed through the holes to complete a circuit, which caused a counter to advance one unit.  This capability pointed up the principal difference between the analytical engine and the tabulating machine; Hollerith was able to use electrical power rather than mechanical power to drive the device.

Hollerith, who had been a statistician with the Census Bureau, realized that the punched card processing had high potential for sales.  In 1896, he started the Tabulating Machine Company, which was very successful in selling machines to railroads and other clients.  In 124, this company merged with two other companies to form the International Business Machines Corporation, still well known today as IBM.


IBM, Aiken & Watson


For over 30 years, from 1924 to 1956, Thomas Watson, Sr., ruled IBM with an iron grip.  Before becoming the head of IBM, Watson had worked for the Tabulating Machine Company.  While there, he had a running battle with Hollerith, whose business talent did not match his technical abilities.  Under the lead of Watson, IBM became a force to be reckoned with in the business machine market, first as a purveyor of calculators, then as a developer of computers.


IBM's entry into computers was started by a young person named Howard Aiken.  In 1936, after reading Babbage's and Lovelace's notes, Aiken thought that a modern analytical engine could be built.  The important difference was that this new development of the analytical engine would be electromechanical.  Because IBM was such a power in the market, with lots of money and resources, Aiken worked out a proposal and approached Thomas Watson.  Watson approved the deal and give him 1 million dollars in which to make this new machine, which would later be called the Harvard Mark I, which began the modern era of computers.


Nothing close to the Mark I had ever been built previously.  It was 55 feet long and 8 feet high, and when it processed information, it made a clicking sound, equivalent to (according to one person) a room full of individuals knitting with metal needles.  Released in 1944, the sight of the Mark I was marked by the presence of many uniformed Navy officers.  It was now W.W.II and Aiken had become a naval lieutenant, released to Harvard to help build the computer that was supposed to solve the Navy's obstacles.


During the war, German scientists made impressive advances in computer design.  In 1940 they even made a formal development proposal to Hitler, who rejected farther work on the scheme, thinking the war was already won.  In Britain however, scientists succeeded in making a computer called Colossus, which helped in cracking supposedly unbreakable German radio codes.  The Nazis unsuspectingly continued to use these codes throughout the war.  As great as this accomplishment is, imagine the possibilities if the reverse had come true, and the Nazis had the computer technology and the British did not.


In the same time frame, American military officers approached Dr. Mauchly at the University of Pennsylvania and asked him to develop a machine that would quickly calculate the trajectories for artillery and missiles.  Mauchly and his student, Presper Eckert, relied on the work of Dr. John Atanasoff, a professor of physics at Iowa State University.


During the late '30's, Atanasoff had spent time trying to build an electronic calculating device to help his students solve complicated math problems.  One night, the idea came to him for linking the computer memory and the associated logic.  Later, he and an associate, Clifford Berry, succeeded in building the "ABC," for Atanasoff-Berry Computer.  After Mauchly met with Atanasoff and Berry, he used the ABC as the basis for the next computer development.  From this association ultimately would come a lawsuit, considering attempts to get patents for a commercial version of the machine that Mauchly built.  The suit was finally decided in 1974, when it was decided that Atanasoff had been the true developer of the ideas required to make an electronic digital computer actually work, although some computer historians dispute this decision.  But during the war years, Mauchly and Eckert were able to use the ABC principals in dramatic effect to create the ENIAC.


 


Computers Become More Powerful


The size of ENIAC's numerical "word" was 10 decimal digits, and it could multiply two of


these numbers at a rate of 300 per second, by finding the value of each product from a


Multiplication table stored in its memory. ENIAC was about 1000 times faster than the previous generation of computers. ENIAC used 18,000 vacuum tubes, about 1,800 square feet of floor space, and consumed about 180,000 watts of electrical power. It had punched card input, 1 multiplier, 1 divider/square rooter, and 20 adders using decimal ring counters, which served as adders and also as quick-access (.0002 seconds) read-write register storage. The executable


instructions making up a program were embodied in the separate "units" of ENIAC, which


were plugged together to form a "route" for the flow of information.  The problem with the ENIAC was that the average life of a vacuum tube is 3000 hours, and a vacuum tube would then burn out once every 15 minutes.  It would take on average 15 minutes to find the burnt out tube and replace it.


Enthralled by the success of ENIAC, the mathematician John Von Neumann undertook, in 1945, a study of computation that showed that a computer should have a very basic, fixed physical construction, and yet be able to carry out any kind of computation by means of a proper programmed control without the need for any change in the unit itself. Von Neumann contributed a new consciousness of how sensible, yet fast computers should be organized and assembled. These ideas, usually referred to as the stored-program technique, became important for future generations of high-speed digital computers and were wholly adopted. The Stored-Program technique involves many features of computer design and function besides the one that it is named after.  In combination, these features make very high speed operations attainable. An impression may be provided by considering what 1,000 operations per second means. If each instruction in a job program were used once in concurrent order, no human programmer could induce enough instruction to keep the computer busy. Arrangements must be made, consequently, for parts of the job program (called subroutines) to be used repeatedly in a manner that depends on the way the computation goes. Also, it would clearly be helpful if instructions could be changed if needed during a computation to make them behave differently. Von Neumann met these two requirements by making a special type of machine instruction, called a Conditional control transfer -- which allowed the program sequence to be stopped and started again at any point - and by storing all instruction programs together with data in the same memory unit, so that, when needed, instructions could be changed in the same way as data.


As a result of these techniques, computing and programming became much faster, more flexible, and more efficient with work.  Regularly used subroutines did not have to be reprogrammed for each new program, but could be kept in "libraries" and read into memory only when needed. Hence, much of a given program could be created from the subroutine library.  The computer memory became the collection site in which all parts of a long computation were kept, worked on piece by piece, and put together to form the final results.  When the advantage of these techniques became clear, they became a standard practice.


The first generation of modern programmed electronic computers to take advantage of these improvements was built in 1947.  This group included computers using Random- Access-Memory (RAM), which is a memory designed to give almost constant access to any particular piece of information. . These machines had punched-card or tape I/O devices.  Physically, they were much smaller than ENIAC. Some were about the size of a grand piano and used only 2,500 electron tubes, a lot less then required by the earlier ENIAC. The first-generation stored-program computers needed a lot of maintenance, reached probably about 70 to 80% reliability of operation (ROO) and were used for 8 to 12 years.  This group of computers included EDVAC and UNIVAC, the first commercially available computers.


Early in the 50's two important engineering discoveries changed the image of the electronic-computer field, from one of fast but unreliable hardware to an image of relatively high reliability and even more capability. These discoveries were the magnetic core memory and the Transistor - Circuit Element. These technical discoveries quickly found their way into new models of digital computers. RAM capacities increased from 8,000 to 64,000 words in commercially available machines by the 1960's, with access times of 2 to 3 MS (Milliseconds). These machines were very expensive to purchase or even to rent and were particularly expensive to operate because of the cost of expanding programming. Such computers were mostly found in large computer centers operated by industry, government, and private laboratories -- staffed with many programmers and support personnel. This situation led to modes of operation enabling the sharing of the high potential available.  During this time, another important development was the move from machine language to assembly language, also known as symbolic languages.  Assembly languages use abbreviations for instructions rather than numbers.  This made programming a computer a lot easier.


After the implementation of assembly languages came high-level languages.  The first language to be universally accepted was a language by the name of FORTRAN, developed in the mid 50's as an engineering, mathematical, and scientific language.  Then, in 1959, COBOL was developed for business programming usage.  Both languages, still being used today, are more English like than assembly.  Higher level languages allow programmers to give more attention to solving problems rather than coping with the minute details of the machines themselves.  Disk storage complimented magnetic tape systems and enabled users to have rapid access to data required.


All these new developments made the second generation computers easier and less costly to operate.  This began a surge of growth in computer systems, although computers were being mostly used by business, university, and government establishments.  They had not yet been passed down to the general public.  The real part of the computer revolution was about to begin.


One of the most abundant elements in the earth is silicon; a non-metal substance found in sand as well as in most rocks and clay.  The element has given rise to the name "Silicon Valley" for Santa Clara County, about 50 km south of San Francisco.  In 1965, Silicon valley became the principle site of the computer industry, making the so-called silicon chip.


An integrated circuit is a complete electronic circuit on a small chip of silicon.  The chip may be less than 3mm square and contain hundreds to thousands of electronic components.  Beginning in 1965, the integrated circuit began to replace the transistor in machines was now called third-generation computers.  An Integrated Circuit was able to replace an entire circuit board of transistors  with one chip of silicon much smaller than one transistor.  Silicon is used because it is a semiconductor.  It is a crystalline substance that will conduct electric current when it has been doped with chemical impurities shot onto the structure of the crystal.  A cylinder of silicon is sliced into wafers, each about 76mm in diameter.  The wafer is then etched repeatedly with a pattern of electrical circuitry.  Up to ten layers may be etched onto a single wafer.  The wafer is then divided into several hundred chips, each with a circuit so small it is half the size of a fingernail; yet under a microscope, it is complex as a railroad yard.  A chip 1 centimeter square it is so powerful that it can hold 10,000 words, about the size of an average newspaper.


Integrated circuits entered the market with the simultaneous announcement in 1959 by Texas Instruments and Fairchild Semiconductor that they had each independently produced chips containing several complete electronic circuits.  The chips were hailed as a generational breakthrough because they had four desirable characteristics.


· Reliability - They could be used over and over again without failure, whereas vacuum tubes failed ever fifteen minutes.  Chips rarely failed -- perhaps one in 33 million hours of operation.  This reliability was due not only to the fact that they had no moving parts but also that semiconductor firms gave them a rigid work/not work test.


· Compactness - Circuitry packed into a small space reduces equipment size.  The machine speed is increased because circuits are closer together, thereby reducing the travel time for the electricity.


· Low Cost - Mass-production techniques has made possible the manufacture of inexpensive integrated circuits.  That is, miniaturization has allowed manufacturers to produce many chips inexpensively.


· Low power use -- Miniaturization of integrated circuits has meant that less power is required for computer use than was required in previous generations.  In an energy-conscious time, this was important.


The Microprocessor


Throught the 1970's, computers gained dramatically in speed, reliability, and storage capacity, but entry into the fourth generation was evolutionary rather than revolutionary.  The fourth generation was, in fact, furthering the progress of the third generation.  Early in the first part of the third generation, specialized chips were developed for memory and logic.  Therefore, all parts were in place for the next technological development, the microprocessor, or a general purpose processor on a chip.  Ted Hoff of Intel developed the chip in 1969, and the microprocessor became commercially available in 1971.


Nowadays microprocessors are everywhere.  From watches, calculatores and computers, processors can be found in virtually every machine in the home or business.  Environments for computers have changed, with no more need for climate-controlled rooms  and most models of microcomputers can be placed almost anywhere.


New Stuff


After the technoligical improvements in the 60's and the 70's, computers haven't gotten much different, aside from being faster, smaller and more user friendly.  The base architecture of the computer itself is fundementally the same.  New improvements from the 80's on have been more "Comfort Stuff", those being sound cards (For hi-quality sound and music), CD-ROMs (large storage capicity disks), bigger monitors and faster video cards.  Computers have come a long way, but there has not really been alot of vast technological improvements, architecture-wise.