COMPUTER SCIENCE AND ENGINEERING
COMPUTER ARCHITECTURE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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True
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False
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Either A or B
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None of the above
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Detailed explanation-1: -The processor fetches the instruction from primary memory. The program counter goes down by one. When the fetch-decode-execute cycle finishes the CPU gets ready to start the cycle again.
Detailed explanation-2: -The fetch-execute cycle (also known as fetch-decode-execute cycle) is followed by a processor to process an instruction . The cycle consists of several stages. The memory address held in the program counter is copied into the MAR . The address in the program counter is then incremented-increased-by one.
Detailed explanation-3: -During the fetch execute cycle, the computer retrieves a program instruction from its memory. It then establishes and carries out the actions that are required for that instruction. The cycle of fetching, decoding, and executing an instruction is continually repeated by the CPU whilst the computer is turned on.
Detailed explanation-4: -Explanation: The fetch execution cycle refers to the execution of instructions by the CPU. This is a multi-step process in which instructions are fetched, decoded, executed, and then stored. The result of this cycle allows an instruction to be executed by the CPU allowing the process cycle to continue.