Hardware and Buses: Computer Science OCR: GCSE (9:1)

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Description and Tags

OCR Computing Science

12 Terms

1

Data Bus

Used to transport data to and from memory and the CPU.

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2

Address Bus

Used to transport the addresses of data between the CPU and memory.

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3

Control Bus

Used to transport command around the CPU and communicate signals with other components.

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4

Motherboard

Circuit board which all other components connect to.

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5

Hardware

The physical components which make up a computer system.

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6

Random Access Memory (RAM)

Volatile memory which will temporarily store data and instructions which are currently being executed by the CPU. Loses all contents once the computer is turned off.

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7

Central Processing Unit (CPU)

The part of the computer which completes all the instructions. Referred to as the brain of the computer.

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8

Graphics Processing Unit (GPU)

Processing unit specifically designed to perform scientific calculations to speed up the processing of graphics based applications.

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9

Peripherals

Term given to the input and output devices with by a computer.

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10

Power Supply Unit (PSU)

The component which supplies the power to a computer system.

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11

Read Only Memory (ROM)

Non-volatile memory which retains its contents when the computer is turned off, and can not be changed.

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12

Sound Card

A component attached to the motherboard which allows the use of audio devices to hear multimedia.

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