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Revision - Coggle Diagram
Revision
Why are is hex usefull?
shorter and easier
easy to remember
Takes less storage
hexadecimal:16 base number system.0-9 A-F
calculating pixels:pixel width * height
pixel:a circle or a square that is in an image
computers use binary because it has two states
analogue sound
digital sound
sample
1 + 0 = 1
1 + 1 = 0 carry 1
1 + 1+ 1 = 1 carry 1
colour depth
colour depth used with binary
24 bits: 16 million pixels
calcutation for colour depth : image width
image height in pixels
colour depth
mbits(bits),MB(bytes)