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Chapter 1: Problem 20

When a CPU executes the instructions in a program, it is engaged in what process?

Short Answer

Expert verified
Answer: The process a CPU undergoes when executing instructions in a program is called the Instruction Execution Cycle or Fetch-Decode-Execute Cycle. It involves fetching the instruction from memory, decoding it to determine the operation and operands, and executing the instruction with storing the result in a register or memory.

Step by step solution

01

Understanding CPU Components

A Central Processing Unit (CPU) is the primary component of a computer that performs most of the processing inside the computer. It consists of the following components: 1. Arithmetic Logic Unit (ALU): Performs arithmetic and logical operations. 2. Control Unit (CU): Manages data movement between the CPU and other components. 3. Registers: Temporary storage of data and instructions.
02

Execution Process

When a CPU executes the instructions in a program, it goes through the following process, known as the Instruction Execution Cycle or Fetch-Decode-Execute Cycle: 1. Fetch: The CPU fetches the instruction from the memory. 2. Decode: The instruction is decoded to determine the operation and operands. 3. Execute: The instruction is executed, and the result is stored in a register or memory. So, the process is called the Instruction Execution Cycle or Fetch-Decode-Execute Cycle.

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