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Inside the CPU, you will find:

• ALU, CU, registers, cache memory

• ADU, PC, storage, RAM memory

• ARM, PC, controller, cache memory

• APM, CU, time signal, RAM memory

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What component holds the address of the next instruction?

• Memory Address Register

• Memory Data Register

• Program Counter

• Accumulator

The CU...

• does any maths or logic problems for the CPU

• stores data inside the CPU

• sends out control signals for the CPU

• holds specific data for the fetch-decode-execute cycle

The MDR holds the ____ which is being sent to/fetched from the address in the MAR.

The ALU....

• does any maths or logic problems for the CPU

• stores data inside the CPU

• sends out control signals for the CPU

• holds specific data for the fetch-decode-execute cycle

Results of calculations are held in this register:

• Memory Address Register

• Memory Data Register

• Program Counter

• Accumulator

This would perform an operation including the word “And”

• Arithmetic Logic Unit

• Accumulator

• Cache

• Control Unit

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What is the purpose of a bus in von Neumann architecture?

• transfer instructions from main memory to the CPU

• transfer data between the CPU and main memory

• move data around the CPU

• save data in the main memory

There are 3 buses in von Neumann architecture. The data bus, the control bus and ???

• address bus

• instruction bus

• processor bus

• arithmetic bus

What is the role of the clock in von Neumann architecture?

• allow instructions to be time stamped

• synchronise the actions of the CPU

• record the time taken to carry out each instruction

• tell the control unit when to send an instruction