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Want to make a counter that will stop taking clock pulse if count is 3.

Irving

Irving

Joined Jan 30, 2016
3,897
LesJones said:
Hi Irving, Re post #17 you are correct. I had not looked at the datasheet for the CD4026 so I did not realise it had a clock inhibit input. The TS still needs to change the decode of the segment pattern from 4 to 3. The circuit that he followed will count to 3. The next clock pulse will take it to 4 but that will set it back to zero after a few microseconds.
Click to expand...
Yes, it will appear to count 0, 1, 2, 3, then 0 but I'm not convinced that was actually intended or was just fortuitous... fortunately the inhibit at 3 can still be done with a 2-input AND gate (but not saying how yet)

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