COMPUTER SCIENCE AND ENGINEERING
COMPUTER ARCHITECTURE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Fetch-Execute-decode
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Process-decode-fetch
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Fetch-Decode-Execute
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Process
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Detailed explanation-1: -The instruction cycle (also known as the fetch–decode–execute cycle, or simply the fetch-execute cycle) is the cycle that the central processing unit (CPU) follows from boot-up until the computer has shut down in order to process instructions.
Detailed explanation-2: -It is composed of three main stages: the fetch stage, the decode stage, and the execute stage.
Detailed explanation-3: -Ans : The instruction cycle consists of four phases: fetching an instruction from memory, decoding the fetched instruction, reading the address from memory, and finally, instruction execution.
Detailed explanation-4: -Now, the command will be executed. The operand is copied to the MAR, as it provides the address of the data to be loaded (0100 in this case). The data at address 0100 is then fetched from RAM and passed up the data bus to the MDR.