Computer Information Systems
March 22, 2010
According to Stair and Reynolds, an Information System "is a set of interrelated components that collect, manipulate, and disseminate data and information to provide feedback and meet objectives." Computer information systems are particularly software applications and computer hardware, that "convert, store, protect, process, transmit and retrieve information" (Wikipedia, para 1). The use of data input and output, different types of media storage, and speed of a computer, one must consider the best outsource of applications the corporate atmosphere.
Data input methods allow users to retrieve data with accessible sources. Many different applications (questionnaires, telephone survey, bank checks, retail tags, and long documents), data input is used to retrieve this data and determining the best method for these applications.
For example, an optical data reader would used for printed questionnaires and long documents. Optical data readers are used to scan documents and come in two categories, OCR or OMR. OMR documents are those, which use pencil dots and the device scans the data and outputs the results, as on a questionnaire form. OCR can take hand written and typed documents and put them into digital date. This would be a very helpful device on long documents.
A voice recognition device would be used for a telephone survey. It recognizes human speech and turns the voice into digital form to a computer. Bank checks are encoded and read using a MICR machine. A MICR machine (Magnetic Ink Character Recognition Device) is used to read the bottom portion of a check. It takes the encoded data and process's this data and clears the check through customer accounts. Retail tags are scanned using bar code scanner devices.
Data output offers output from one computer to input into another. "These forms of output may...