n. Data that is represented by continuous variations in some physical property, such as voltage, frequency, or pressure. Compare digital data transmission.
Analog data is data that can be considered to be an analog signal, as opposed to a digital signal, which is either on or off (1 or 0), or a series of discrete steps made from 1's and 0's, with no intermediate steps. Analog data is used by a wide variety of analog instruments, such as seismometers, sound level meters, and others.