good relay / lamp drivers are available from http://www.allegromicro.com/ i
think the part number i use is 5832 uses  clock, data, and latch lines to
pic and this device has 32 outputs, there are also versions the are 8
output.

michael

-----Original Message-----
From: Ed Arnold <hilander@BELLSOUTH.NET>
To: PICLIST@MITVMA.MIT.EDU <PICLIST@MITVMA.MIT.EDU>
Date: Thursday, April 02, 1998 7:34 AM
Subject: Out of I/O Lines


>I am working on a project which uses all of the i/o pins on a 16F84.
>But I want to add some user indicators to show when operations are being
>carried out.  I chose some momentary switches with internal lamps.  I
>have already done the math with these lamps and I think it's safe to use
>a standard 2N2222 setup.  My problem lies with available I/O lines.  I
>have none.  I want to use the same I/O line that the switch is connected
>to, since it will not be needed during this time frame.  But I am not
>sure if this will work.  I have an idea of what the schematic *might*
>should look like, but I am not sure.  I really don't wish to smoke
>anything.  Can anyone lend me a hand with schematic ideas an even some
>code examples.
>
>Thanks
>Ed Arnold
>hilander@bellsouth.net
>