COMPUTER SCIENCE AND ENGINEERING
COMPUTER ARCHITECTURE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Instructions are fetched from main memory
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Instructions are decoded in the control unit
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The decoded instruction is executed
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The ALU decodes the instructions
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Detailed explanation-1: -The processor fetches the command value from the memory location. Once the command has been fetched, it needs to be decoded and executed. For example, this could include taking one value, putting it into the Arithmetic Logic Unit (ALU), then taking a different value from a register and adding the two together.
Detailed explanation-2: -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. The computer processor carries it out.
Detailed explanation-3: -During the decode stage, the control unit (CU) will decode the instruction in the CIR. The CU then sends signals to other components within the CPU, such as the arithmetic logic unit (ALU) and the floating point unit (FPU).