Most computers are digital devices. Therefore, any signals and data from an analog device must be passed through a suitable analog-to-digital converter before they can be received and processed by computer. Similarly, output signals from digital computers must be passed through a digital-to-analog converter before they can be received by an analog device.

Pertaining to or being a device or signal that is continuously varying in strength or quantity, such as voltage or audio, rather than based on discrete units, such as the binary digits 1 and 0. A lighting dimmer switch is an analog device because it is not based on absolute settings. Compare digital (definition 2).
(of a quantity or device) Changing continuously; by contrast a digital quantity or device varies in series a of distinct steps. For example, an analog clock measures time by means of a continuous movement of hands around a dial, whereas a digital clock measures time with a numerical display that changes in a series of discrete steps.

Množina: analogs

1. Something that is analogous or similar to something else
2. An organ or part similar in function to an organ or part of another animal or plant but different in structure and origin
3 usually analog; a chemical compound that is structurally similar to another but differs slightly in composition (as in the replacement of one atom by an atom of a different element or in the presence of a particular functional group)
4. A food product made by combining a less expensive food (as soybeans or whitefish) with additives to give the appearance and taste of a more expensive food (as beef or crab)

Množina: analog circuits

Množina: analog computers

A computer that measures data varying continuously in value, such as speed or temperature.
A computer that represents information by variable quantities (e.g., positions or voltages); SYN. analogue computer.
Computing device that performs calculations through the interaction of continuously varying physical quantities, such as voltages (as distinct from the more common digital computer, which works with discrete quantities). An analog computer is said to operate in real time (corresponding to time in the real world), and can therefore be used to monitor and control other events as they happen.
Although common in engineering since the 1920s, analog computers are not general-purpose computers, but specialize in solving differential calculus and similar mathematical problems. The earliest analog computing device is thought to be the flat, or planispheric, astrolabe, which originated in about the 8th century.

Množina: analog datas

Data that is represented by continuous variations in some physical property, such as voltage, frequency, or pressure. Compare digital data transmission.

Množina: analog modems

See modem.

Množina: analog signals

In electronics, current or voltage that conveys or stores information, and varies continuously in the same way as the information it represents (compare digital signal). Analogue signals are prone to interference and distortion.
The bumps in the grooves of a vinyl record form a mechanical analog of the sound information stored, which is then is converted into an electrical analog signal by the record player's pick-up device.

Množina: analog-digital converters

Množina: analog-to-digital ports