Sources of Data Input and Output

Topics: Computer data storage, USB flash drive, Floppy disk Pages: 3 (629 words) Published: July 25, 2011
Accuracy of data input is important. What method of data input would be best for each of the following situations and why:

* Printed Questionnaires:
* Keyboard and mouse
* User can type data using the keyboard and use the mouse to click/select pieces of data * Telephone Survey:
* Voice input device
* Surveys may be set up to function using voice recognition for users responding to a fixed set of questions * Bank Checks:
* MICR (Magnetic Ink Character Recognition) * The characters encode the account number, bank transit and check number, usually processed automatically. * Retail Tags:

* POS (Point of Sale) System
* Manages the selling process from an accessible salesperson interface and allows for the creation and printing of receipts. The device may have a barcode scanner that contains information for a specific product, which is useful for pricing and inventory details. * Long Documents:

* Optical Data Reader
* A scanner identifies the characters and ava

Convenience and quality of output are important. Explain what method of output would be best for each of the following situations and why:

* Hand-held computer:
* Visual output (i.e. – LCD monitor)
* LCD (Liquid Crystal Display) monitors are ideal for laptop computers for the output of text or low resolution graphics using smaller display sizes * Color Photograph:

* High Resolution Printer
* Using photo paper, high resolution printers can be used to produce multicolor images using different dimensions * Resume:
* Printed Hardcopies or Email Attachments...
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