Thanks for your patience...
- Whats the value of the cap on the LS123.?
B8116
- What type of ic is the 14pin?
Sorry I do not understand what you mean...
(again my electronic level is close to 0)
You should have decoupling caps on the +5V rail, sau 10uF and 100nF.
Sorry???
EDIT; just seen your 2 extra posts!!, so its a 741 opa.
What voltage levels do you get out from the 741, when the switch is pressed and not pressed.?
- EDIT2: where are you measuring the low pulse output and how.????
by measuring the pulse between the 0 and the pin 13