All single pole single throw switches are digital input devices, as are press to make and press to break switches, basicaly any input that is either on or off.
A digital device uses discrete values. By contrast, non-digital systems use a range of values to represent information. Although digital representations are discrete, the information represented can...
1. Generally speaking, a digital clock is a digital device. The "heart" of any clock is whatever is used as its time base, and with a digital clock, some kind of digital timing circuit supplies that...