Analog:

Analog is described as a mechanism in that data is represented through continuously variable physical quantities.  Since it applies to the intermediate range, the outcome of the intermediate range is an analog current. Because of the huge range of the flux measured, use of logarithmic circuitry is needs for indication on a single scale instrument.  An Analog is used in contrast to digital to refer to circuits in that the magnitude of the signal carries the information. Below figure describes an instance of an analog show, and describes a digital display.

Figure: Analog and Digital Displays