-----------
Press 3 and C lights, AB off, don't you mean?
-----------
Yaa. :-)

I presume on the diagram that the chips are already supplied by +5V to both
pin14s and GND on Pins 7.
Also on the second 74HC02 does the UC2 UCD pins 10 13 need grounding via a
resistor?
As the outputs would be High until the button was pressed. Or can I just
leave them unconnected.?

Regards
Wombat.




"Wombat-Pipex-News" wrote in message
...
"John Fields" wrote in message
...
On Thu, 16 Nov 2006 06:59:13 -0500, "Wombat-Pipex-News"
wrote:

Hi all.
Can anyone give me a diagram or help on how to do this..
I've got 3 LEDs, and 3 Momentry Switches.
Id like to make it so that 1 LED is on at all times.
eg.
123 - ABC
Press 1 and A Lights, BC off.
Press 2 and B Lights, AC off.
Press 3 and C Lights, BC off.

---
Press 3 and C lights, AB off, don't you mean?
---

And so on. Defalut would be 1-A when inital power up is done.

I could do this dead easily with small relays, but Im trying not to use
them. Idealy it would use Transistors or a small chip.
The source is +5V fed from a 7805
Im trying to get away from the old Clicking way of doing it. !!

Any help on this would be very welcome.

---
Schematic for you at:




--
JF

Just the Job dude.
Thanks.
I was Just looking at NOR, NAND type CMOS chips :-)
http://www.doctronics.co.uk/4011.htm

Use full info.

Thanks again.
Regards
Wombat