System Architecture
- Created by: Liam_Eyre46
- Created on: 26-03-18 13:51
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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…
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