Re: the order in which some switches are turned on

From: Martin Griffith <mart_in_medina@xxxxxxxx>
Date: Wed, 23 Apr 2008 07:52:44 +0200

On Tue, 22 Apr 2008 22:19:01 -0700 (PDT), in sci.electronics.design
laura <laura.brandusan@xxxxxxxxx> wrote:

Hi all,

I have an array of N switches . Initially all are OFF.

Somebody turns them ON in some order. It is possible that more
switches are turned ON in the same moment.

I need a device which shows me the order in which the switches were
turned ON. For instance the device should give me: 4,3,1,5,2 (this is
the order in which the switches were turned ON).

The way in which the output is shown in not important. It must be
simple to read (by a human, computer, etc).

It is important that the device is able to handle the turned ON (in
the same moment) of the multiple switches.

thanks,
Laura

Sounds like a simple job for a microprocessor.AVR, pic or 8051.

When 2 switches are turned on at the same time, how would you want to
decode that?

martin
.

Follow-Ups:
- Re: the order in which some switches are turned on
  - From: John Fields
- Re: the order in which some switches are turned on
  - From: laura

References:
- the order in which some switches are turned on
  - From: laura

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