The bit represents a logical state with one of two possible values. These values are most commonly represented as 1 and 0, but other representations such as true / false, yes / no, on / off, and + / − are also widely used.
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Sometimes abbreviated as b (lowercase), bit is short for binary digit. It's a single unit of information with a value of either 0 or 1 (off or on, false or true, low or high).
Bits are stored in memory through the use of capacitors that hold electrical charges. The charge determines the state of each bit which, in turn, determines the bit's value. Various combinations of bits -- combinations of 0s and 1s -- are used to represent numbers larger than 1.
bit, in communication and information theory, a unit of information equivalent to the result of a choice between only two possible alternatives, as between 1 and 0 in the binary number system generally used in digital computers. The term is shortened from the words “binary digit.”
