Data representation

Brodie McMeowface
Mind Map by Brodie McMeowface, updated more than 1 year ago
Brodie McMeowface
Created by Brodie McMeowface over 3 years ago
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Description

An overview of GCSE computing topic 2.6 (Data Representation) Please rate and comment so I know haw to improve these resources for future use by other people, thanks :-)

Resource summary

Data representation
1 Terms to remember:

Attachments:

1.1 Bit
1.2 Nibble
1.3 Byte
1.4 Kilobyte
1.5 Megabyte
1.6 Gigabyte
1.7 Terabyte
1.8 Petabyte
2 Binary
2.1 Why data needs to be converted to binary to be processed by a computer
2.2 Covert denary to binary
2.3 Adding binary
2.4 Explain binary shifts
2.4.1 Left
2.4.2 Right
3 Hexadecimal
3.1 from binary to hex
3.2 From denary to hex
3.3 And back
4 Character sets
4.1 Define
4.2 How binary is used to represent characters
4.3 How more bits = more characters
4.4 ASCII
4.5 Extended ASCII
4.6 Unicode
5 Images
5.1 Represented in pixels
5.2 Color depth
5.3 Bitmap
5.4 Resolution
5.5 Metadata
6 Sound
6.1 Sampling
6.1.1 Sample rate
6.1.2 Amplitude
6.1.3 Bit depth
6.2 Analogue
7 File size
8 Compression
8.1 Lossy
8.2 Lossless
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