BCD UP/DOWN COUNTER

[D'COUNCILOR]

Good day everybody!

I'm building the digital up/down counter using CD4510 as the counter with CD4511 as the display driver (7 segment). My problem is, I only needs the counter to count from 6 to 0. In short I would like to shorten the count from 9 to 6. Can anybody give me an idea on how to shorten the counting of CD4510? I REALLY APPRECIATE ANY HELP THAT YOU MAY EXTEND TO ME.
THANK YOU VERY MUCH IN ADVANCE.


D'COUNCILOR

 

[Prof.Insane]

Remove a bit

I dont know which circuit you are using so this may not work. Disconnect bit 4 (the one representing an 8) from your display driver and connect this to the reset of your BCD. That should work.

 

[D'COUNCILOR]

Hello!

Thank you very much PROF. INSANE for your suggestion and I will try your suggestion. But for your reference and may be you can give me more accurate suggestion regarding my problem, I got the circuit from BOWDEN'S HOBBY CIRCUIT. The title of the circuit is "9 SECOND DIGITAL READOUT COUNT DOWN TIMER". The website is
**broken link removed**

I'll wait for your response again.

Thank you and more power.

D'COUNCILOR

 

[Prof.Insane]

Yup.

Now ive seen the circuit, I can see how it works. Disconnect pins 3 and 4, and ground these. Connect pins 13, 12 and 4 to +12V, this tells the counter to start at 6 instead of 9.

All done now.

**broken link removed**

Best of luck,

-Chris.

 

[D'COUNCILOR]

GOOD DAY CHRIS

Thanks again for your response. I do really appreciate your help and I will try it later.

More power!


D'COUNCILOR