Bit
A bit is a digit in the binary numeral system, the most elementary unit in digital systems. It is the smallest unit of storage used in computing. The word "bit" is a contraction of the words "binary" and "digit." Its value can only be 1 or 0, corresponding to a voltage in an electronic circuit. Bits are used to represent values in the binary numbering system. As an example, the 8-bit binary number 10011010 represents the unsigned value of 154 in the decimal system. In digital sampling, a binary number is used to store individual sound levels, called samples. A byte is a collection of eight bits.
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