1.1.1 The purpose of the CPU

Today we're looking at the purpose of the CPU, specifically the
following parts from the OCR Computer Science Specification
(https://www.ocr.org.uk/images/225975-specification-accredited-gcse-computer-science-j276.pdf)


the purpose of the CPU 


Von Neumann architecture:


MAR (Memory Address Register)

MDR (Memory Data Register) 

Program Counter 

Accumulator 



common CPU components and their function:


ALU (Arithmetic Logic Unit)

CU (Control Unit)

Cache



the function of the CPU as fetch and execute instructions stored
in memory 


clock speed