System Architecture - Purpose of the CPU

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GCSE Computing Karteikarten am System Architecture - Purpose of the CPU, erstellt von Miguel Adrian Symonds Orozco am 05/03/2024.
Miguel Adrian Symonds Orozco
Karteikarten von Miguel Adrian Symonds Orozco, aktualisiert vor 3 Monate
Miguel Adrian Symonds Orozco
Erstellt von Miguel Adrian Symonds Orozco vor 3 Monate
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Zusammenfassung der Ressource

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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
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