Limitations of binary data representation (Edexcel GCSE Computer Science): Flashcards

$2^n$

16 values ($2^4 = 16$)

256 values ($2^8 = 256$)

0 to 255

-128 to +127

Cuts positive range in half

128 patterns ($2^7 = 128$)

Not enough patterns for other languages like Japanese or Arabic

Uses more bits per character, represents 140,000+ characters

Bits used for each pixel's colour information

16 different colours ($2^4 = 16$)

Better quality means larger file sizes

Volume levels per sound sample

65,536 levels ($2^{16} = 65,536$)