ITWissen.info - Tech know how online

binary digit (Bit)

Bit is a neologism made up of binary and digit and is the smallest digital unit of information. A bit characterizes a binary, i.e. two-valued, dimensionless state. If the state is present, the bit has the value 1, if the state is not present, it has the value 0. A bit therefore only knows two states: 1 or 0, yes or no, open or closed.

These two states are the basis for all digital technology. With this two-valued system, arithmetic operations can be carried out using dual arithmetic, and signals can be mapped and transmitted in digital form.

Binary units and their valences

Binary units and their valences

If two bits are combined in a group, this is called a dibit, three a tribit and four a quadbit, also called a nibble or half byte. Such bit groups are mainly used in modulation, for example in modems. A bit group of eight bits forms a byte (B).

In computer and communication technology, bit groups of 8, 16, 32 or 64 bits are formed.

Informationen zum Artikel
Englisch: binary digit - Bit
Updated at: 07.09.2008
#Words: 196
Links: