Computers & Hardware

A:

Seymour Cray developed the first transistorized supercomputer for the Control Data Corporation in 1958. He introduced the CDC 6600, the first supercomputer to use functional parallelism, in 1964.

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  • What is the purpose of a CPU?

    Q: What is the purpose of a CPU?

    A: A computer's CPU is considered the "brain of the computer," being responsible for its major processes, like searching for information, sorting information, making calculations and advanced processes as well as decisions integral to the functioning of the computer. The acronym CPU actually stands for central processing unit and, as such, works behind virtually any task the user is doing on their computer, like writing essays, making photo albums or reading emails. The CPU is made out of a very complex silicon integrated circuit board mounted with tiny, microscopic transistors that can easily number in the billions.
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  • Why is the keyboard not in alphabetical order?

    Q: Why is the keyboard not in alphabetical order?

    A: The modern keyboard is not arranged in alphabetical order because millions of users have already learned the QWERTY keyboard layout, which is named after the first six letters in the top row of keys. The reason behind the development of the QWERTY layout as opposed to an alphabetical layout is debated, but two primary theories are accepted explanations.
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  • What is the difference between a laptop and a notebook?

    Q: What is the difference between a laptop and a notebook?

    A: Notebook computers are smaller than laptops and usually weigh less than 6 pounds whereas laptops weigh up to 18 pounds. Laptops also typically have more functionality, including desktop accessories like DVD drives.
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  • What are the different types of media?

    Q: What are the different types of media?

    A: The different types of media can be broken down into two categories: print and broadcast. The Internet is also emerging as a type of media, as more and more people are getting their news from the Internet.
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  • What is the standard typing speed?

    Q: What is the standard typing speed?

    A: For a casual typist, the average typing speed is 41 words per minute (WPM) with 92 percent accuracy, according to eLearning Industry. The average is between 50 and 80 WPM for individuals who write for a living.
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  • How does RAM work?

    Q: How does RAM work?

    A: Random Access Memory, or RAM, is used by computers to store and access information using a random order. This resource provides a temporary way for computers to process electronic data, while making computers more responsive and helping operate memory-intensive programs. RAM chips are only capable of storing and accessing information when electrical power is present.
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  • What are microprocessors used for?

    Q: What are microprocessors used for?

    A: Microprocessors are used in servers, desktop computers, laptops and mobile devices. They are popular in embedded devices, which traditionally use microcontrollers. Microprocessors were named to set them apart from larger processors used in the middle of the 20th century.
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  • Who invented the first supercomputer?

    Q: Who invented the first supercomputer?

    A: Seymour Cray developed the first transistorized supercomputer for the Control Data Corporation in 1958. He introduced the CDC 6600, the first supercomputer to use functional parallelism, in 1964.
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  • What is the function of the CPU?

    Q: What is the function of the CPU?

    A: A CPU is the brain of a computer, according to About.com's Tim Fisher. Short for "central processing unit," the CPU interprets commands before executing them. The CPU is also called a processor or central processor.
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  • What are some examples of mainframe computers?

    Q: What are some examples of mainframe computers?

    A: Examples of mainframe computers include the IBM zSeries, System z9 and System z10 servers. IBM dominates the mainframe market with more than 90 percent market share. In addition to IBM machines, mainframes in use include the ClearPath Libra brand and the ClearPath Dorado from Unisys.
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  • Why does my mouse keep freezing?

    Q: Why does my mouse keep freezing?

    A: A computer mouse may freeze or become unresponsive because of accumulated dirt, use of the wrong settings or a bad surface. An incompatible driver, a loose cable or interference from other input devices may also cause the computer mouse to function abnormally.
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  • What is the role of device drivers?

    Q: What is the role of device drivers?

    A: A device driver is a component that a computer’s operating system uses to interact with a hardware device, such as a network adapter or modem. A driver interacts with the device through a communications subsystem to which the hardware connects. The operating system or other computer program calls a function in the driver to execute commands on the device.
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  • What is a DVD writer?

    Q: What is a DVD writer?

    A: A DVD writer is a computer peripheral that allows a user to store data on a blank DVD. DVD writers are available as external units that attach to a computer port and as internal drives that are housed within a computer's case.
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  • What are robots used for today?

    Q: What are robots used for today?

    A: Robots are used for a variety of purposes, including welding, handling chemicals, marine exploration and space missions. Advanced robots are designed to serve and assist people. There are other robots that mow lawns and vacuum floors.
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  • What is a computerized database?

    Q: What is a computerized database?

    A: A computer database is a huge compilation of electronic files stored at a single location that is designed and modeled to support processes that require storage and retrieval of relevant information without a lot of work to the user. Computer databases are generally run and managed by specially designed applications known as database management systems software. These management systems allow users to add, edit, manipulate and store data as needed.
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  • How to remove the hard drive from a tower computer?

    Q: How to remove the hard drive from a tower computer?

    A: To remove a hard drive from a tower computer, users need to back up their data, open the computer case, locate the hard drive, disconnect it by removing the IDE ribbon cable and the power computer and take the drive out. Users should make sure the computer is turned off, while performing the removal.
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  • What is the purpose of a word processor?

    Q: What is the purpose of a word processor?

    A: A word processor is a software application that creates, stores and prints documents. Word processors are categorized as application software created to accomplish specific tasks as needed by the user.
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  • Why has my computer screen turned sideways?

    Q: Why has my computer screen turned sideways?

    A: If everything on a computer screen has turned sideways, the culprit is likely to be someone attempting to pull a prank; a quick combination of keystrokes changes the orientation of a computer's screen. It is startling and disorienting to see the screen display turned sideways, but it does not mean that something terrible or irreparable has happened to the computer.
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  • What was the name of the first computer?

    Q: What was the name of the first computer?

    A: The Electrical Numerator Integrator and Calculator (ENIAC) was the first computer, and it was developed in 1946 by John Presper Eckert and John Mauchly. The duo's research was sponsored by the U.S. military.
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  • Where can you sell an old laptop?

    Q: Where can you sell an old laptop?

    A: Used laptops and personal computers can be sold locally at garage sales, flea markets, consignment and pawn shops and through classified ads in local newspapers. Used laptops and PCs can also be sold on the Internet through retail sites that allow private sales, including Amazon, eBay and Bonanza.
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  • What is the difference between inkjet and laser printers?

    Q: What is the difference between inkjet and laser printers?

    A: Inkjet printers create images by shooting drops of ink onto paper as dictated by a computer, while laser printers use a xerographic process in which an image is digitally scanned by a laser, then transferred to paper. It is important to consider the advantages and disadvantages of both types when shopping for a printer.
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