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fredd [130]
4 years ago
12

Briefly describe the main functionality of the program counter register (PC), the instruction register (IR), and the execute pro

cess of an instruction in a computer.
English
1 answer:
satela [25.4K]4 years ago
7 0

Explanation:

<u>program counter:</u>

  • it is also known as instruction pointer.
  • it has the address of the instruction that is being executed at that time.
  • it is a 32-bit register .

<u>instruction register:</u>

  • it keeps the instruction that is being executed at that time.
  • it holds active memory that is currently executed

<u>execute process:</u>

it is based on 3 cycles:

  1. fetch
  2. decode
  3. execute

fetch:

it takes the instruction from program counter(has memory address)

decode:

the instruction that is fetched is decoded/interpreted  by the decoder.

execute:

The result generated by the operation is stored in the main memory or sent to an output device

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