One of the ten figures or symbols, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, by which all numbers are expressed; so called because of the use of the fingers in counting and computing
The symbols used in a number system In the base 10 system we use the digits 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0
A measure of the display span of a panel meter By convention, a full digit can assume any value from 0 to 9, a 1/2 digit will display up to 1 and overload at 2, and a 3/4 digit will display up to 3 and overload at 4, etc For example, a meter with a display of +-4999 counts is said to have a 3-4/5 digit display