Note-This clase includes devices used to control transfer information to and from a Computer (as modified). The input device is used for transferring data and instructions into a computer. The output device is used to transfer results of processing by the computer to the Information technology or ADP peripheral devices. Input/output devices combine the above functions in the same device. This class includes printers, display units, disk drive units (magnetic, optical and floptical), tape drive units, terminals, data entry devices and transfer units. Also includes Optical Compact Disk (CD) devices used for the storage and retrieval of data and firmware.
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