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Devices of Computers
Computers perform the input, storage, processing, and output functions of the information system. In addition, computers and their devices need ways to communicate with one another. These devices are usually connected by electronic cables when located near each other. The factors that determine the reliability of an information system are the accuracy of data input, the convenience and quality of output, optimal use of storage devices, and the speed of a computer.
Accuracy of data input is important, and computers ensure that the results are correct by not making mistakes that people do. There are many types of input devices and deciding which one to use could save time and improve accuracy. ... Optical scanning input devices include optical character recognition (OCR), which recognize certain printed characters. ... Relative to this, bar-code scanning is one of the most common optical scanning input devices. ... Similar to scanning, there are other forms of input devices that are used for different purposes. For example, voice input devices uses voice recognition that aids in the use of telephone surveys. ... A LCD screen is thin and lightweight and is best used for small hand held computers. ...
In a fast paced world, different types of storage devices are optimal for different situations. ... RAM is the main type of primary storage used with all computers. ...
In conclusion, computers perform the input, storage, processing, and output functions of the information system. In addition, computers and their devices need ways to communicate with one another. The factors that determine the reliability of an information system are the accuracy of data input, the convenience and quality of output, optimal use of storage devices, and the speed of a computer.
Approximate Word count = 1387
Approximate Pages = 5.5
(250 words per page double spaced)
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