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Identify the constituent parts of a total computer system.
Member rating: No Rating | Words: | Submitted: Fri Jan 09 2004
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Identify the constituent parts of a total computer system: Hardware - input and output units Backup storage; central processing unit; Software - applications package; Operating system; The main function of a computer system is to process data. When data has been processed and output it becomes information. The main stages of this procedure are: 1. The Input Stage - where data is put into the computer. 2. The Processing Stage - where the data is processed. 3. The Output Stage - where the results are displayed. A computer also needs to store data for later use. This is done on a backing storage device. Hardware - input and output units INPUT DEVICES Barcode reader Barcodes are different groups of vertical bars that can be read by an optical scanner. Barcodes are printed on nearly every product that you can buy. Shops use barcodes because they are cheap to produce and very durable. Concept keyboard A concept...
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