Been searching for topics relating to what I have been experiencing and to no avail.
Hopefully some of you might have a hint or tip. I am using a TI CD40110B CMOS Up/Down decade counter. It has a separate clock up and clock down. I connected to a Kingston 7-segment LED and here's what I have been observing:
- Counting up from 0 to 9 is ok.
- Counting from 0 to 1 to 2 to 3 back to 2, when clock up is activated nothing happens. When activated AGAIN, it jumps to 3.
- Counting down from 9 to 2 to 3 then back to 2. Then clock up is activated, nothing happens. When activated again, it jumps to 3.
I can't seem to figure out what's the problem. It only happens when one returns from 3 to 2 and making an attempting back to 3.
If you have any suggestion, please post. Thanks for reading.