(Computer information system refers to a man-machine system composed of computers and their related and supporting equipment, equipment and networks that collect, process, store, transmit and retrieve information according to certain usage plans and rules. The information network and the computer information system are different. The detailed name of the computer information system in the development stage. Before the mid-1990s, the computer information system was a computer information system composed of a large computer as the core and many personal computers connected together through a network.)
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