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Computer: Devices
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A NIC, or Network Interface Card, is a circuit board or chip, which allows the computer to communicate to other computers on a Network. This board, when connected to a cable or other method of transferring data such as infrared, can share resources, information and computer hardware. Local or Wide area networks are generally used for large businesses as well as are beginning to be found in homes as home users begin to have more than one computer. Utilizing network cards to connect to a network allow users to share data such as companies being able to have the capability of having a database that can be accessed all at the same time, send and receive e-mail internally within the company, or share hardware devices such as printers.
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Seemingly, multitasking would cause a computer that is switching between several programs to run more slowly - in direct proportion to the number of programs it is running. However, most programs spend much of their time waiting for slow input/output devices to complete their tasks. If a program is waiting for the user to click on the mouse or press a key on the keyboard, then it will not take a "time slice" until the event it is waiting for has occurred. This frees up time for other programs to execute so that many programs may be run at the same time without unacceptable speed loss.
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Sometimes abbreviated as 'puter, a computer is an electronic device that allows you to input data and have it stored, processed, or otherwise manipulated quickly and efficiently. Computers help make jobs that used to be complicated much simpler. For example, a user can easily write letters in a word processor and edit any portion of the letter anytime, spell check the letter, move text from another document into the letter, etc.
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Around the same time, computers became widely accessible for personal use by individuals in the form of home computers and the now ubiquitous personal computer. In conjunction with the widespread growth of the Internet since the 1990s, personal computers are becoming as common as the television and the telephone and almost all modern electronic devices contain a computer of some kind.
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