Information Systems Hardware

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Information Systems Hardware The accuracy of data input is important because without it there would be no method for analyzing data. There are different devices that can be used to input data such as the keyboard, mouse, scanning devices and optical data readers. The keyboard and mouse can be used for typing text and selecting information. This would be a good method for inputting printed questionnaires because it would provide for better data accuracy and there would not need to try to interpret the person's handwriting. This could also provide a method for entering responses from responders in a telephone survey by using the number keypad on the telephone to record their responses. Scanning devices are like copiers and can duplicate data such as images and characters. Some different types of scanning devices are magnetic ink character recognition (MICR), bar code scanners and optical data readers. Magnetic ink character recognition is used a great deal in the bank industry on paper checks, loan application and bank statements. Data is placed on the bottom of the checks with special ink which can be read by people and computers. Bar code scanners are able to read a bar-coded label with a laser scanner. Retail tags often use bar code scanners for tracking inventory and pricing available items. Typically a scanning device called an optical data reader is used to scan long documents. This type of reader uses optical character recognition to recognize characters, charts and images and make them into a digital file.
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