WJEC GCSE Computer Science - Hardware Architecture

The part of the CPU that performs calculations and logic operations

• Register

• Control Unit

• Clock

• Arithmetic/logic unit (ALU)

A storage location inside the CPU used to hold an instruction, an address or other single item of data.

• Control Unit

• Arithmetic/Logic Unit

• Register

• Clock

Memory used to make up for the difference in speed between two internal components.

• Niche

• Cash

• Cache

• Register

The part of the CPU that organises the actions of the other parts of the CPU

• Register

• Control Unit

• Arithmetic/Logic Unit

• Clock

A temporary store for data and instructions (programs)

• Main Memory/random access memory (RAM)

• Memory Address

• Solid Sate Drive

• Cloud Storage

Memory that is erased when the power is turned off

• Read-only memory (ROM)

• Cloud storage

• Non-Volatile

• Volatile

Memory that is not lost when the power is turned off

• Non-volatile

• Volatile

• Read Only Memory (ROM)

• Random Access memory (RAM)

Memory that cannot be altered and is not lost when the power is turned off.

• Volatile

• Read Only Memory (ROM)

• Non-volatile

• Random Access Memory (RAM)

What is the sequence of steps carried out repeatedly by the CPU

• Execute Decode Fetch Cycle

• Fetch Decode Execute Cycle

• Decode Execute Fetch Cycle

Computer System Design in which the program is stored in memory with the data

• Harvard Architecture

• von Neumann architecture