System Architecture

?

The Purpose of the CPU:

  • The CPU fetches instructions for memory (RAM), it decodes the instructions and then executes those instructions.
  • The purpose of the CPU is to process data. It is where all the sorting, calculating, searching and decision making takes place.
  • The CPU also controls other components like: Hard disk, DVD drive, Sound system, Graphics system.

 ALU - Does the logical comparisons that need to be processed.

Control Unit - Can execute or store results coming out of the ALU.

Registers - Store the data that is to be executed next.

Von Neumann Architecture:

  • This describes a design architecture for an electronic digital computer with parts consisting of a processing unit containing an arithmetic logic unit and processor registers; a control unit containing an instruction register and program counter; a memory to store both data and instructions; external mass storage; and input and output mechanisms.

Fetch - Decode - Execute Cycle:

  • The first step the CPU carries out…

Comments

kwame1234

Report

x dat all