I need an inexpensive array of (real) pushbuttons
that are 5 x 5 plus 2 col of 12 rows. What would
you recommend?


Ideally they would be self scanned and deliver a
code for 'down' and a code for 'up' via serial line.

I have used the IEE panels in the past for this.

Thanks,

Rick
Merrill

Nah. There's a simple part that does keyboard matrix w/debounce:

Check out the MM74C923N
Datasheet at http://www.fairchildsemi.com/ds/MM/MM74C923.pdf

Gary

"Mike Harding" <mike_harding1@nixspamhotmail.com> wrote in message
news:sp00rvs34ppq1aa7uu9h6cpabu0p4bdbbo@4ax.com...

Mike Harding wrote:
Thanks for all the good feedback.

How about I get a $10 keyboard at Office Depot and hook
that up to scan 7x7 ? - RM