Computing formulas
Image - width (in pixels) x height (in pixels) x colour
depth (bits)
● Colour depth can be given in no of colours, so convert it you need to
express it as 2^x where x is the colour depth
● To convert to bytes you divide by 8
● Bits, nibble, bytes, kilobyte, megabyte, gigabyte, terabyte
Sound - sample rate (in hertz) x sample resolution (in bits) x time (in seconds)
Number systems
● If you shift right then it’s dividing by 2
● It is always with 2^x, e.g shifting 3 bits is dividing by 2^3 which is 8
Image - width (in pixels) x height (in pixels) x colour
depth (bits)
● Colour depth can be given in no of colours, so convert it you need to
express it as 2^x where x is the colour depth
● To convert to bytes you divide by 8
● Bits, nibble, bytes, kilobyte, megabyte, gigabyte, terabyte
Sound - sample rate (in hertz) x sample resolution (in bits) x time (in seconds)
Number systems
● If you shift right then it’s dividing by 2
● It is always with 2^x, e.g shifting 3 bits is dividing by 2^3 which is 8
