What is the time it takes for the CPU to fetch an instruction from main memory and execute it?

What is the time when the CPU fetches an instruction from main memory and executes it?

The time it takes for the CPU to fetch an instruction from main memory and execute the instruction is called the instruction cycle, which is often represented by several machine cycles, which in turn includes several clock cycles.

Instruction cycle, fetch-and-execute cycle refers to the steps that the CPU goes through to execute instructions.

The reason why computers can work automatically is because the CPU can fetch an instruction from the memory where the program is stored and execute it; then it can fetch the instruction and execute the instruction again, and so on, forming a closed loop. cycle. This cycle will continue unless a shutdown command is encountered.

Instruction cycle: The total time it takes for the CPU to fetch an instruction from memory and execute it.

CPU cycle: Also called machine cycle, it takes a long time for the CPU to access memory once, so it is defined by the shortest time to read an instruction word from memory.

Clock cycle: Usually called the tick pulse or T cycle. A CPU cycle consists of several clock cycles.

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