Nibble
A nibble ( rare: nybble ) is a data set comprising 4 bits, it is also called nibble, nibble or quad.
The designation is based on English verb to nibble ( " nibble ", " take a little bite " ) and the phonetic similarity of bite ( " bite ", " bite " ) and byte. The pun "to nibble = to take half a bite " led to this designation.
The sixteen values of the nibbles include the range of values from zero (binary 0000) to fifteen (binary 1111), and can be easily identified by the hexadecimal digits from 0 hex to Fhex. This is also the reason for the " repudiation " of the Oktalsystems lies with the numeric 0okt to 7okt ( for three binary digits ) - Front and Rear nibble were, for example, in spite of identity due to the octal number representation is not immediately recognizable as such: 273okt = 10111011bin = BBhex ( = 187dec ).
The 16 possible values for a nibble are:
Half a nibble is also called Crumb (English for crumbs ). So a Crumb comprises two bits. This term is very rarely encountered because bits are rarely represented in groups of two.