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Did anyone build two seven segments up\down counter?

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hassan1980

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Did anyone build two seven segments up\down counter?
 

i built it using FPGA programming
 

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    hassan1980

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do u want it to do using microcontroller or without it. i have both the methods. it is very simple.
 

multiplexing two 7-seg displays with pic 16f84:
**broken link removed**
 

pixel said:
multiplexing two 7-seg displays with pic 16f84:
www.mikroelektronika.co.yu/english/product/books/PICbook/7_08chapter.htm
Click to expand...

hassan1980 .. Assalamo alaykom,

I think this is one of the best solutions you have to try !

Very simple to build, and to debug...

Bettawfeek,
Ahmad,
 

i made one using only logical operators , logical nand , nor etc ...
 

ok , u can use bistables to do it ,its very simple , look at the pics , it uses 4 jk bistables to get ur number into 4 digit , then u can use any transcoder to get it working on a 7 segment.
i'm joining here also the 74ls192 (an up down counter ) datasheet .
if u need anything else just tell me and i'll try to make complete schematics for u (when i have some free time ). but i think if u search for it u will find what u want .
 
go for two 74190 if u want BCD counting or go for 74169 for binary counting. See the datasheets of these IC's then u will get how to do it
 

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