OCR GCSE - CPU Role and registers

CPU stands for...

• Control processing unit

• Centralised process unit

• Central process unified

• Central processing unit

A desktop computer would usually consist of...

• Input/Output/CPU/Main memory

• CPU/Main memory/Secondary storage

• Input/Output/CPU/Main memory/Secondary storage

• CPU/Main memory/Secondary storage

The processor is often made up of multiple what?

• Cores

• Centres

• Executions

• Instruction centres

What acts as a temporary storage between the processor and the main memory?

• Bus

• User

• Cache

• Clock

What is held in cache?

• All the programming instructions

• Frequently used instructions and data

• Instructions that have been processed

• Data that hasn't been used for a long time

This would perform an operation such as 5+8 ?

• Arithmetic Logic Unit

• Accumulator

• Cache

• Control Unit

What is the purpose of the accumulator?

• To perform arithmetic operations

• To hold the results of a calculation

• To hold the instructions that been processed

• Tp store the previous instruction being worked on

What does PC stand for?

• Program Counter

• Program Cache

• Processor Clock

• Processor Counter

What is copied into the MAR from the PC?

• The address of the next instruction to be fetched

• The data currently being worked on

• The contents of RAM

• Holds data fetched from memory

What is a register?

• Main memory

• Small, very fast memory located in the CPU

• It is used as an indicator of the processors speed

• Secondary storage