24 Hr Clock with Time change option

This is a modified version of my Very old 60min stopwatch circuit which i posted in Every Circuit few years ago. There are 2 toggle switches on the bottom left corner and they are to be operated like a DPDT switch..and it is used to Toggling Normal mode and settings mode. Switching the toggle to left enables normal counting operation. Switching to the right enables the settings mode. After going to the settings mode, Use the three push to on switches on the top left corner to set the Seconds, Minutes and Hours. After setting the correct values toggle the DPDT switch back to normal operation and it starts to count from the time you set. NOTE: make sure to set the time from hours to seconds..as if one section resets, the previous section's ten's place will reset ( I tried to solve it using another AND gate in active mode but the output were only 1.7V not enough to trigger the other gates). NOTE 2: My phone moderately Lagged while running this simulation..hence the clock input may be set wrong as my simulation ran quite slowly. Also, ANYONE OUT THERE WHO GOT TIME TO TEST THE WHOLE THING, PLS LET ME KNOW IF THERE ARE ANY MISTAKES IN THE CKT PS:- i had to decrease the time period to 1ms ..so that u guys wont get bored by waiting for one cycle to complete.😅 Thanks --ARKtech49

published 7 years ago