ABSTRACT
The computer control unit executes instructions in the right sequence, interprets each instruction, and applies the right commands in the arithmetic unit and other logical units in accordance with this interpretation. Process computers sometimes employ the Harvard structure. In some computer systems a cache memory, a small buffer memory between the auxiliary memory and the central processing unit, is used. The network must support a variable configuration and operate under heavy loading since large amounts of information have to be transferred. The computer main memory is random access, and the access time is short. The physical connection between a computer and a peripheral is established by an interface. The physical connection between computer and peripheral can be realized in many different ways. Functions handled by the computer processing unit are taken over by a subsystem with its own central processing unit that handles all the activities of the subsystem.
