System Architecture - Purpose of the CPU

Question	Answer
The Purpose of the CPU	The purpose of the CPU is to carry out sets of instructions. The CPU carries out instructions by using the fetch-execute cycle (also called the fetch-decode-execute cycle).
What is the CPU?	- The Central Processing Unit - It is the brain of the computer
What does its power depend on?	- Clock speed - Number of Cores - Cache size
The Fetch-Execute Cycle (Fetch)	The CPU fetches data from the memory - Copy Memory address from the program counter to the MAR - Copy the instruction in the MAR to the MDR - Increase the program counter to point the address of the next instruction.
The Fetch-Execute Cycle (Decode)	It decodes it to make it easier to understand - The instructions in the MDR are decoded by the CU.
The Fetch-Execute Cycle (Execute)	It executes the instructions - The instruction is performed. - This could be. - Load data from memory. - Write data to memory

Resource summary

	Created by Miguel Adrian Symonds Orozco over 1 year ago