026. Cambridge IGCSE Topic 3.1 Purpose of the components in a CPU

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CAMBRIDGE 0478 & 0984 Specification Reference
Section 3.1 - 2a

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00:00 Purpose of the components in a CPU
00:22 Intro
00:27 Main components of a computer
01:09 Internal structure of the CPU
01:28 Control unit
02:27 Program counter (PC)
03:15 Memory address register (MAR)
03:34 Memory data register (MDR)
04:01 Current instruction register (CIR)
04:32 Arithmetic logic unit (ALU)
05:16 Accumulator (ACC)
06:11 Buses
07:22 Summary
07:41 Going beyond the IGCSE specification
07:59 Internal structure of the CPU: Other important components
08:15 Decode unit
08:49 Status register
09:15 Clock
09:53 Interrupt register (IR)
10:34 Cache
11:12 Outro

Last updated: 04.09.25

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