Bob Blick
> I looked at the schematic and description and it looks to me like it will
> work, however I would suggest the addition of 4 resistors (one in series
> with each keyboard row)

Hi, Bob

I have done what you've suggested. If the row resistance grow beyond
220ohms, no current sinks through the low-out so the weak pull up remains
with a logic 1...
The keypad already has almost 90ohms and the diodes drop some tension.
Besides, we can add a 330omhs or more in series with LCD data lines.
It was tested with this configuration and works fine, but some calculations
must be done to prevent what you have said.


Regards,
Dennis.

Ps:
I didn't care about it because I was focused on relocatable code. I did it!
But it gonna take extra time to make that blocks of code a useful thing. I
fought against a message on Value column "Out of Scope"... and the
temptation was "ok, back to absolute!", but the spirit of Olin showed off
anD told me: "You will never understand this,... but you can try". So, now
I have the relocatable workable version of the lcd-keypad...
(RTFM+TRY$ERROR+COFFE,a lot of coffe). 8p

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