Analog

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The term analog or analogue ^[1] may refer to:

• analog signal, a variable signal continuous in both time and amplitude
• analog circuit, an electronic circuit using a continuously variable signal
• analog clock, a clock or watch that represents time by position on a dial
• analog computer, a computer that uses electrical or mechanical phenomena
• analog television, a television that uses an analog signal
• analog (chemistry), a structural derivative of a parent compound that often differs from it by a single element.

In the U.S., the spellings analog and analogue are interchangeable for the noun (except, for example, in the literary sense above); the adjective is usually spelled analog. In the rest of the English-speaking world the spelling is usually analogue for both noun and adjective; see og/ogue. However, the spellings given above should be retained in cases where it forms part of a name or is an acronym.