101 Binary Watch


A binary watch uses 18 LEDs to give the HH:MM:SS time using three binary numbers each consisting of 6 bits.

The following diagram can help you understand how to work out the time displayed on a binary watch:

Using the above diagram we can work out the actual time being displayed:

Your Task:


Can you tell what is the time displayed by each of the following binary watches:

HH:MM:SS: (view solution)
HH:MM:SS: (view solution)
HH:MM:SS: (view solution)

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