As the title says, I want to build a clock using the mains frequency (50Hz). I only want to use digital integrated circuits from the CD4xxx series or something similar. (no microcontroller or do-it-all IC)
I plan on using a transformer and a comparator to generate the clock from the mains frequency and 6 CD4511 each connected to 6 common-anode 7 segment displays for HH:MM:SS.
My question is how to build the circuitry. I was thinking of using an 8 bit counter to count at 100 and when the output is 0110 0100 (100 deca) using AND/NAND gates to build a new clock which goes positive only at 100 deca. Next one CD4510 for every digit and make them reset at different values with AND/NAND gates again. This seems a bit cumbersome. Is it an easier way to hook the counters up?