AQA A’Level SLR17 The processor and its major components
About this video
AQA Specification Reference
AS Level 3.7.3.1
A Level 4.7.3.1
In this video we take the lid off a processor and explain the role and operation of its major components, including: ALU, Control unit, Clock and Registers.
Key question:
- What are the major components of a processor and what do they do?
00:00 The processor and it's major components
00:11 Intro
00:16 Main components of a computer
00:33 Internal structure of the CPU
00:49 Control unit
01:38 Program counter (PC)
02:29 Memory address register (MAR)
02:54 Memory buffer register (MBR)
03:23 Current instruction register (CIR)
04:17 Arithmetic logic unit (ALU)
04:50 General-purpose registers - Accumulator
05:26 Status register
05:56 Clock
06:21 Key question
06:33 Going beyond the specification
06:43 Other important components of the CPU
07:00 Decode unit
07:29 Interrupt register
08:05 Cache
08:56 Outro
Last updated: 05.06.25
