74192 counter up/down

[Josua]

Hi guys. Can you help me? I'm working on a project using ic 74192 and ic 7448 and also a 7 segment display. My goal is to make it count either up or down, but it doesn't count and always display 0.
How can I send a pulse to it and make it count without using ic 555?
Thank you.

 

[Audioguru]

74xx logic ICs are extremely old.
A debounced switch can send a pulse to a counter.

 

[ads-ee]

Here is an almost identical project....

Maybe you can use it for inspiration on getting yours to work.

 

[D.A.(Tony)Stewart]

74xxx is Standard power TTL which is normally floating input =logic "1" at 1.3V but for noise margin>=2V is valid and <=0.8V is a "0". Thus they will count if enabled using contact close to 0V on clock in. But best practise uses 10k-100k pull-up to5V.

4xxx , 14xxx series is original CMOS which is random on floating and for ESD reasons is never left floating.

Switches also bounce so a capacitor across switch or after switch increases RC time constant to reduce chatter voltage. If you want to initialize 1 on power up put capacitor from V+ to input, otherwise cap on input to ground with pullp R for momentarily "0" on power up .

Search google images for circuits e.g. https://www.google.ca/search?q=7419...qi=2&ved=0CAYQ_AUoAQ&biw=1024&bih=644#facrc=_