60 second timer

This 60-second timer is a sequential circuit that uses JK flip-flops, AND gates, NAND gates, and a digital clock. It counts from 00 to 60. It has one switch to reset the timer to 00. It has two control inputs and two control output displays. The inputs are clock and reset, the clock signal is at 20 Hz, and it's a square wave that controls the count rates. The rest signal logic 0, it resets and holds the count 00 and the reset signal logic 1 is enabled when the count reaches 60 and it gets again reset to 00.