Input And Output
1) Accuracy of data input is important. What method of data input would be best of each or the following situations and explain why:
Printed questionnaires: The best method for data input for questionnaires would be a keyboard, because it permits one to produce the required test that formulates the questionnaires. As well there would be less room for errors such as unclear writing.
Telephone survey: Voice recognition is best because a voice input device can be programmed to distinguish answers spoken into the receiver allowing it to all be completed by computers.
Bank checks: Scanning devices that recognizes bar codes are called Micr (Magnetic Ink Character Recognition) a magnetic scanning input device. This system reads the number at the bottom of the checks and will mechanically make modifications to the correct accounts. A Micr input system will magnetize the information at the bottom of the check for simple interpretation.
Retail tags: The best data input for retail tags would be a bar code scanner. This is called an optical scanning input device. By using a bar code scanner manual input if number into a keypad is not necessary.
Long documents: The best would be to use a character scanning device coupled with optical character recognition (OCR) software is the most efficient. This will save a lot of time.
2) What method of output would be best for each of the following situations and why:
Hand held computer: The best method of output for hand help computer would be a screen, because most people can easily read them, and their display can change quickly.
Color photograph: The best method of output for this situation is an ink-jet, due to the high printing quality that a color photograph demand.
Resume: The best method would be a laser or ink-jet for printing resumes, because of their printing quality, and the reason for that is it would be treated as a business letter, therefore...
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