For those starting out learning digital ICs (TTL or CMOS) here are some aids. One common error is using bare switches on clock inputs. These inputs need to be clean pulses without glitches. Switch contacts bounce creating multiple pulses. Attached here are some examples of how to create clean pulses.
It is suggested that such circuits be built up on pc boards or breadboards because they will be used often. There are many other ways to accomplish these ends.

Moderators note: shown images full size

 

View attachment 122850 View attachment 122851 View attachment 122852
View attachment 122853 View attachment 122854
For those starting out learning digital ICs (TTL or CMOS) here are some aids. One common error is using bare switches on clock inputs. These inputs need to be clean pulses without glitches. Switch contacts bounce creating multiple pulses. Attached here are some examples of how to create clean pulses.
It is suggested that such circuits be built up on pc boards or breadboards because they will be used often. There are many other ways to accomplish these ends.

Moderators note: shown images full size

Yet another way to generate pulses. This one generates a single pulse (about 100 ms as shown) or a string of pulses.