Different quantities of bits can be described with specific names and prefixes. You should
know quite a few of these terms, but you also need to know what they represent.
■ At the very basic level you have bits, nibbles and bytes.
■ A bit is just 1 binary digit, e.g. 1 or 0.
■ A nibble is 4 bits, e.g. 0110 or 1101.
■ A byte is 8 bits (or 2 nibbles), e.g. 10101101 or 01011011.After a byte you start recording the number of bits in powers of 10.
The binary prefix for 210 is Ki and it is called kibi.
the binary prefix for 220 is Mi and stand for Mebi
The binary prefix for 230 is Gi and stand for Gibi
The binary prefix for 240is Ti and stand for Tebi
These are called prefixes because they will all come before what they represent, which is
the number of bytes:
kibibytes= 210 =1024 bytes
mebibytes= 220=1048576 bytesgigibytes=230=1073741824 bytes
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