OCR GCSE Computer Science: 1.1 Architecture (Part 2)

What is the purpose of the CPU

• Process data

• Input data

• Delete data

• Output data

The CPU is often described as...

• The muscle of the computer

• The brains of the computer

• The head of the computer

• The eyes of the computer

What is the purpose of the Control Unit (CU)?

• Controls the flow of data around the CPU and to and from other components

• Controls the actions carries our by the CPU and other components

• Controls the input and output devices that are attached to the computer

• Controls the timings of the CPU and limits and increases it's frequencies when needed

What is the purpose of the ALU?

• To carry out arithmetic operations

• To carry out logical operations

• To carry out addition operations

• To move data between the CPU and accumulator

A register...

• Is a specialist type of cache which is large in capacity and very fast

• Is a specialist type of memory which is small in capacity and very fast

• Is a specialist type of CPU specifically used for counting

• Is a specialist type of CPU used in smaller, low power devices

Which of the following are specialist registers?

• MBR

• CU

• MDR

• PC

• MAR

Which of the following types of memory is fastest?

• RAM

• Secondary Storage

• CPU Cache

Which of the following types of memory is fastest?

• RAM

• Secondary Storage

• CPU Cache

• Registers

CPU Cache contains...

• General Data

• Applications

• Frequently used instructions and data

• General instructions

Which can store the most data?

• CPU Cache

• Registers