@Bleu Digital means that a device performs its calculations using two discrete states - on or off, 1 or 0 - binary. In the case of a digital watch, the timekeeping is done using a microchip with a quartz oscillator - and, helpfully, the display is set of seven segments, displaying the actual numbers (or digits - satisfying the other, looser, definition of digital).
I suppose that, technically, many 'analogue' watches are digital (in that they use a microchip with a quartz oscillator to perform the actual timekeeping). But they fail to satisfy the other definition of digital in that the time is displayed using sweeping hands, and the numbers that the hands point to are almost vestigial. In fact, many don't have numbers at all - or have pared down the numbers to 12, 3, 6 and 9.
A purely mechanical watch fails to satisfy either definition of digital.
Biting the hand that feeds IT
