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  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

0-999 binary counter

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jack311

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Hello Folks. I am new here. This is my firt time. I am currently in college and need to make a 0-999 counter using three 7490 decade counters. Can anyone please assist me with the schematics.
I would really appreciate this.

Thanks all. I found this site very interesting.
 
Hi, Its really easy to do this project if youre not TOO lazy and have looked at the datasheet for the 'ls90. HINT - use a BCD decoder chip like the 74ls47. Both datasheets are easy to follow - its almost like cheating!! HINT #2, theres a very similar project (2 digit counter) already posted in this forum. :p
 
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