computer science

information representation

what is the difference between kilobytes and kibibytes?

kilobytes has 1000 bytes while kibibytes has 1024 bytes

where is binary coded decimals used?

banking calculations

-ensures accurate representation of decimal values

-avoid errors in financial transactions

electronic displays
-simplifies visual display of digits

-eases conversion between denary and BCD

storage of date and time in BIOS

-facilitates easier conversion with denary

what is twos complement?

its where you do the inverse of the bits and add 1

differences between Unicode and ASCII

-unicode can represent a wider range of characters compared to ascii

-represents different langauges

-contains up to 32 bits

what is a bitmap image composed of?

it has a grid of pixels, each with its own colour and intensity

define pixel