The D-type flip-flop is essentially connected in the familiar way of Q-bar to D-input to form a bistable with each clock rising edge toggling the output state. However, in this case the combination of ...

Figure 1 goes for economy by adding a D-type flip-flop and a few discretes to a minimal SPST momentary ... Actually, the 4013-datasheet truth table tells us that nothing so dramatic (and unproductive) ...

The main circuit contains two D flip-flops, D1 and D2, which act as switches to send and stop the data flow into following circuit. The output of the D1 is fed to a 24-bit serial-in, parallel-out ...