Hi everybody,
I have a question regarding the 7474 IC (D Flip Flop) that I am hoping someone could answer. I fully understand how it works (I think). And using a 555 timer that generates a 1Hz signal that feeds the Enable, I am able to make the 7474 chip work as expected.
However, if I remove the 555 timer from the circuit and try to manually control the Enable by moving a wire to 0 and 1 back an forth to simulate a clock signal, the D Flip Flop no longer works as expected.
Could anybody explain why this wouldn't work? I was expecting the D Flip Flop to still react (to any change in D) when I manually move from 0 to 1 with the wire leading into the Enable.
Please note that my background is Programming and I am mostly self taught in this area so there may be holes in my knowledge. (Sorry.)
Thank you very much for your help.
Pat
I have a question regarding the 7474 IC (D Flip Flop) that I am hoping someone could answer. I fully understand how it works (I think). And using a 555 timer that generates a 1Hz signal that feeds the Enable, I am able to make the 7474 chip work as expected.
However, if I remove the 555 timer from the circuit and try to manually control the Enable by moving a wire to 0 and 1 back an forth to simulate a clock signal, the D Flip Flop no longer works as expected.
Could anybody explain why this wouldn't work? I was expecting the D Flip Flop to still react (to any change in D) when I manually move from 0 to 1 with the wire leading into the Enable.
Please note that my background is Programming and I am mostly self taught in this area so there may be holes in my knowledge. (Sorry.)
Thank you very much for your help.
Pat