(the bridge plate between the two batteries is wired to "GND"). Why on earth would a simple digital clock circuit need a negative 1.5V? Even stranger is the fact that the clock does NOT appear to ...

Atomic Digital Clock Auto Set (no back light) - Using radio frequencies broadcast from NIST’s Colorado , the clock will automatically set to the correct time. Automatically adjusts to Daylight ...

Oh sure, there are flip-up digital clocks and all manner of mechanical seven-segment displays, but this one seems to be quite unique, and very pleasing.

Not that the present situation and the abundance of free time that many are experiencing has anything to do with [Leo Fernekes] all-transistor digital clock build, which he started a year ago ...

A clock with hands (an analogue clock) shows us the numbers 1-12. There are 24 hours in one ... and we use this system most often with digital clocks. For any time before 10 o'clock in the morning ...