The BCD clock that displays Hours, Minutes, and Seconds .The bottom row in each column represents a “1” (or 2 to the power of 0 ), with each row above representing higher powers of two, up to 2 to the power of 3 (or 8).

The first two columns represent the hour, the next two represents the minutes  and the last two represents the seconds.
All binary digits of the clock are outlined in blue, A bit that is “1” will be orange, a bit that is “0” will be black.

The clock can be used in 12 or 24 hour format , and
can be stopped in order to more easily understand the binary positions of time.

The clock also has a chime mode which will ring a bell on the hour every hour if chosen