Edexcel curriculum (2015)

Algorithms

Application sof'wre​

Ascii

Binary

Cache

Client-Server

Cloud

Compression

Computational think

CPU

Cyber security

Database

Fetch-d-e cycle

Embedded system

Encryption

Environment

Ethics

File size

Flow chart

Hexadecimal

High Level language

ISP/Internet

Law & Legislation

Logic

Magnetic HDD

Networking

Open source

Operating system

Optical storage

Peer to peer

Pictures (data rep)

Protocols

Run length encoding

RAM

ROM

Simulation software

Solid state HD

Sound

Stored program

Utility Sof'wre

Images

Answer
​Any two of:
Images stored in (an array of) pixels
Number of pixels determines the quality of the image
The number of bits in each pixel determines how many colours/shades
Can be encoded to reduce the file size

RGB

Answer
​All colours are combinations of RGB
Each of R, G, B is 8 bits / 8 bits are allocated to the three primary colours red, green, blue
3 colours x 8 bits each = 24 bits
2 to the power of 24 colours can be represented
24 bits are used to represent the colour of each pixel

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