All data inside the computer is represented by means of binary numbers. A binary (base 2) number has only two digit values: 0 and 1. A bit, an abbreviation of binary digit, can be either 0 or 1; a bit is the basic unit of memory. We can use a sequence of bits to represent a number. A binary number such as 111001 represents:
We can also use a bit to represent false ( 0) or true ( 1). Several Boolean functions are defined:
A byte is a sequence of 8 bits; it can be used to represent a character by assigning a character code to each character.
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