the.com/analog

means Describing a signal or device that represents information as a continuously varying physical quantity, rather than as discrete digits.

from From Greek 'analogos' — 'according to a ratio, proportionate' — built from 'ana-' ('according to') plus 'logos' ('ratio, reckoning'). It passed through Latin and French into English as 'analogous,' meaning corresponding or similar in some proportion. 'Analog' split off to describe things that represent other things by proportional resemblance — a clock hand sweeping smoothly to mirror time's own continuous flow, a thermometer's mercury rising in step with heat. The word entered its modern electronics sense in the 20th century, defined in contrast to 'digital,' once machines came along that represented information as discrete counted steps instead.