Data representation Flashcards
(8 cards)
Image file size formula in bytes
(resolution x bit depth) / 8
Why is data converted to binary in a computer
Computers use logic gates/switches that only process the values 1 and 0
They can only understand 2 states (on and off)
Why is hexadecimal used
It is easier/quicker to read/understand/debug
Why may lossless be used
Can revert and access the og file
Is higher quality (bigger tho)
Lossy bad (sometimes)
How many bits does ASCII use
8
How many bits does Unicode use
16
Sample resoultion
The number of bits that are used per sample that provides the variation in amplitude that can be stored for each
sample
How does lossless compression work
Uses a compression algorithm (RLE)
Repeating words/characters/phrases are identified // Patterns are identified and indexed with number of occurrences and their position
