The meaning of DIGITAL is of, relating to, or utilizing devices constructed or working by the methods or principles of electronics : electronic; also : characterized by electronic and especially computerized …

Digital usually refers to something using discrete digits, often binary digits.

4. Relating to or being a profession or activity that is performed using digital devices: a digital librarian; digital photography. 5. Using or giving a reading in digits: a digital clock. 6. Characterized by …

(Definition of digital from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

While digital refers to something that can be manipulated by the fingers (called "digits"), it also is a type of electronic signal that uses a binary code (a system using numbers, or "digits") to transmit information.

DIGITAL definition: displaying a readout in numerical digits rather than by a pointer or hands on a dial. See examples of digital used in a sentence.

A digital system is one that operates using ones and zeros rather than analog signals.