Digital refers to a data technology that uses discrete (discontinuous) values. It is defined as relating to or using signals or information represented by discrete values (digits) of a physical quantity, such as voltage or magnetic polarization to represent arithmetic numbers or approximations to numbers from a continuum or logical expressions and variables.

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what does digital mean

dig·it·al

[dij-i-tl]

ADJECTIVE

1.

displaying a readout in numerical digits rather than by a pointer or hands on a dial: a digital speedometer; a digital watch.

2.

of, pertaining to, or using numerical calculations.

3.

of, pertaining to, or using data in the form of numerical digits: a digital image; digital devices.

4.

involving or using numerical digits expressed in a scale of notation, usually in the binary system, to represent discretely all variables occurring in a problem.

5.

available in electronic form; readable and manipulable by computer: Scan these two pages so you'll have them as a digital document.

Source:
Dictionary.com

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