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    Refers to numbers in base 10 (the numbers we use in everyday life). For example, the following are decimal numbers:

    9

    100345000

    -256

    Note that a decimal number is not necessarily a number with a decimal point in it. Numbers with decimal points (that is, numbers with a fractional part) are called fixed-point or floating-point numbers.

    In addition to the decimal format, computer data is often represented in binary, octal, and hexadecimal formats.