COMPUTER SCIENCE AND ENGINEERING
COMPUTER ORGANIZATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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PC
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IR
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UPC (MPC)
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None of the mentioned
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Detailed explanation-1: -To read the control words sequentially is used. Explanation: The UPC stands for Micro program counter.
Detailed explanation-2: -To read the control words sequentially from the control memory, a microprogram counter (µPC) is used. Every time a new instruction is loaded into the IR the output of the block labeled ‘starting Address Generator’.
Detailed explanation-3: -Micro-routine: A sequence of control words corresponding to the control sequence of a machine instruction constitutes the micro-routine for that instruction. Micro-instruction: Individual control words in this micro-routine are referred to as microinstructions.
Detailed explanation-4: - A sequence of microinstructions constitutes a microprogram. Since alterations of the microprogram are not needed once the control unit is in operation, the control memory can be a read-only memory (ROM).
Detailed explanation-5: -A sequence of control words (CWs) corresponding to the control sequence of a machine instruction constitute the microprogram for that instruction. The individual control words in this microprogram are referred to as microinstructions.