circuit for a Synchronous Down – Counter circuit that counts from 1111 down to
0000. The circuit to be built using only T flip-flops
Asynchronous/Ripple 4 Bit Up/Down Counter using 4 T Flip Flops sensitive to falling edge of the Clock with a MODE signal and a RESET signal.
Low MODE signal is Up Counting.
High MODE signal is Down Counting.
This circuit uses two 4 bit counters with 3 seven segment display to count from 0 - 100 then repeat.
Digital Combination Lock for CS303 Logic and System Design Project
Two bit Asynchronous up counter that counts from 00 to 11 and back.
Flip Flops 01