Data Representation

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A digit added to the end of a string of digits to check if all the digits have been entered and read correctly
Check Digit
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A group of characters that a computer recognises from their binary representation
Character Set
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A 7-bit character set consisting of 128 characters
ASCII
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A large character set that attempts to include all possible characters that may be written
Unicode
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Small dots that make up a bitmap image
Pixel
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Extra data stored in a file which gives information about a file's properties
Metadata
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The number of bits used for each pixel in an image file
Colour Depth
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The density of pixels in an image
Resolution
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The process of converting analogue signals to digital data
Sampling
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The time between each sample
Sampling Intervals
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The total number of bits available for each audio sample
Sample Size
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The number of bits used per second of sampled audio
Bit rate
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The number of audio samples that are taken per second
Sampling Frequency
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Permanently removing data from a file to decrease the file size
Lossy Compression
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Temporarily removing data from a file to decrease the file size
Lossless Compression
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Other cards in this set

Card 2

Front

A group of characters that a computer recognises from their binary representation

Back

Character Set

Card 3

Front

A 7-bit character set consisting of 128 characters

Back

Preview of the front of card 3

Card 4

Front

A large character set that attempts to include all possible characters that may be written

Back

Preview of the front of card 4

Card 5

Front

Small dots that make up a bitmap image

Back

Preview of the front of card 5
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