The word digital comes from Latin and is derived from digitus, which means finger.
In technology, it refers to the discrete digits that do not have time-continuous changes, like analog values. In this context, discrete in time means that the digital value represents a fixed value for a determinable time. Digital digits can be represented in all number systems: in the decimal system as well as in the octal or dual system.
According to DIN 44300, digital is a type of representation of data with the digits of a number system in which the individual characters can be distinguished from one another. In computer technology, the discrete digital states of logics are linked together. Mathematical operations can be simulated with these links.