So counts from 0 to 9 & then S1 becomes 1 & S0 counts again. Now, SS may also be referred as S1 S0 & the same goes for MM. So, the clock we want is something like this HH : MM : SS A/P. Step 1: The Logic of the Digital Clock Circuit Diagram Digital Clock Circuit DiagramĪs said earlier, our clock is a 12 hour clock. For your kind attention: I ‘ll assume that you know basic high school level digital logic – the fundamental logic gates & binary numbers.
The main emphasis however, is learning sequential logic & developing a breadboard based clock using that knowledge. It is not much but I did whatever extra nicks I could do. The alarm is again achieved using IC’s not by programming boards (which quite honestly is comparatively easy). I have only used IC’s but still got a 12 hour clock, which I’ve not seen elsewhere. Usual digital clock circuit diagram that are based on decade counters have an hour counter from 0 -23.
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