4026 Logic Clock
This clock uses six CD4026BE chips for the clock counter and displays.
The resets are done using a 4001 quad NOR gate and a 4002 dual NOR gate chip. The 1Hz clock pulse is generated by a 4060 14 Stage Ripple Carry Binary Counter/Divider and a 4027 dual J-K Flip Flop chip with a 32.768KHz watch crystal. It also has 5V USB Input with battery backup
|