Re: keypad controller

From: "Peter" <moocowmoo@xxxxxxxxxxxxxxxxxxxxxxxxx>
Date: Tue, 31 May 2005 16:04:29 +0100

<praveen.kantharajapura@xxxxxxxxx> wrote in message
news:1117536016.887828.186350@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> Hi all,
>
> I want to implement a 6x6 matrix keypad controller in hardware which
> should be able to detect multiple key presses.
> Can anybody suggest how to go about this??
>
> Regards,
> Praveen
>

Sounds like a standard matrix to me. This is a link to a diode rom circuit.
The only difference is that you don't burn out the diodes but put a keypad
switch in series with them.
http://www.electronics.dit.ie/staff/tscarff/memory/rom.htm

Peter

.

References:
- keypad controller
  - From: praveen . kantharajapura

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