related divide by 2 operation for a dff

[kumar781]

hi

if the output of DFF(qbar) is connected back to input then the clock frequency gets divided by 2 can anyone explain how it is exactly happening when cmos circuits is used for designing dividers.what should be the input given in such cases .

 

[BradtheRad]

Falstad's animated simulator is ideal for observing the action.

It turns wires green when they are positive polarity, gray when they are neutral.

Its library of circuits comes with a D flip flop made from individual gates.
It's just a matter of drawing a wire from the Not-Q output to the D input.

Click the link below to open the falstad.com website, load the schematic below, and run it on your computer. (Click Allow to load the Java applet.)

https://tinyurl.com/cr3ltyw