What's wrong with the circuit or any suggestions?

Thread Starter

Exjay

Joined Nov 19, 2015
70
I designed and built the attached circuit on a breadboard. It only displays number 0 and nothing else. I connected the input pin of 74192 to ground all to no avail. Please help me out. if I should get help on this have make progress a little. Thanks
 

Thread Starter

Exjay

Joined Nov 19, 2015
70
hi Exjay,
I don't see your circuit?
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I designed and built the attached circuit on a breadboard. It only displays number 0 and nothing else. I connected the input pin of 74192 to ground all to no avail. Please help me out. if I should get help on this have make progress a little. Thanks
MOD: rotated and lightened your image.
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tmp-cam--296922995.jpg
 
Last edited by a moderator:

Thread Starter

Exjay

Joined Nov 19, 2015
70
Thanks all. The circuit has finally worked but the number are inconsistently changing when I press the up or down bottom. Sometimes it will be consistent but most time it is inconsistent. I want to develop a product for commercial use. please what can I do
 
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