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Data representation - Coggle Diagram
Data representation
BIT
smallest representation of data e.g 0 or 1
BINARY
base 2 number system made of only 0s and ones
ASCII
8 bit binary representation of 356 characters
character set
alphanumeric characters and symbols that can be represented by a computer
unicode
32 bit binary representation of major languages
bitmap image
made up of coloured pixels
vector image
made from lines and shapes
Colour Depth
Number of bits used per pixel in an electronic image.
Resolution
Number of pixels in a fixed area. (e.g. dpi = dots per inch).
Analogue
Continually changing data that cannot be directly processed by a
computer (e.g. a sound wave).
Sampling
Reading and storing sound waves at set intervals.
Metadata
Information about the image (e.g. size, date created, author) .
Bit Depth