Hi!!
I need since along time to build a specific counter circuit.

If anybody may help me, I will be thanks a lot.

The features circuit are as following:

1.- It must to be programmed of 0000 to 1001.
2.- It must to be 10 steps ( 0 - 9 ).
3.- It must to have a load pin ( to load the program ).
4.- It must to count up/down.
5.- When it reach state 0000, stop it.
6.- That I can stop the count any time and visualize it. ( 7 segment display)
7.- It must to have a reset button for load the program again.
8.- It must to have a start button, ( when I want).

I found the 74LS192 integrated circuit, BUT I can't to find it in Chile.

If anybody can to get it, say me how and where. Please.
I would be grateful if you would send me the informations.

Thank you very much.
:?

 

Try to find the CMOS version HEF40192 or HEF (or CD) 4029 with same function.

 

This may be a starting point for you ...
http://www.electro-tech-online.com/v...=1687&start=28

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well we had a project like this but except the down counting part.well i think its similar to 3digits and you can find the sources from internet if u want to design a project like this.and i think this site should be another starting point for u too.it tells about designing things like that in the beginning http://www.doctronics.co.uk/4510.htm.
good luck! :wink:

 

OK thank you very much by answers...

OBSERVATIONS:

The project that design, try about controling the 24 seconds in a basketball macth.
If somebody have the circuit, please send me to : pizarropatricio@latinmail.com

PS: The integrated must be programmable.

 

hi can anybody here knows the circuit diagram of MODULO 10 UP/DOWN COUNTER WITH 7 SEGMENT DISPLAY?