dig·i·tal 
(dĭjĭ-tl)
(dĭjĭ-tl)adj.
1.
a. Relating to or resembling a digit, especially a finger.
b. Operated or done with the fingers: a digital switch.
c. Having digits.
2. Expressed in discrete numerical form, especially for use by a computer or other electronic device: digital information.
3. Electronics
a. Relating to or being a device that can generate, record, process, receive, transmit, or display information that is represented in discrete numerical form.
b. Relating to or being a service that provides information expressed in discrete numerical form: We subscribe to digital cable.
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 widespread use of computers: living in the digital age.
n.
A key played with the finger, as on a piano.
digi·tal·ly adv.