I am currently working on a PIC project with my best friend (there are two
of us!) which will be able to record and play keyboard data.  This will be
a useful module for keyboard diagnostics (where keyboard data is read and
played on another machine), hardware macro recording (so nobody need see me
type in a system password etc), PIC data input (a large keyboard with
serial output is pretty useful) and even a far off idea of a typewriter
where eventually data would be read, displayed on an lcd and when ready
played back to a pc.  Unfortunately, all we have come up with between us is
that there are two types of connector, 5 pin standard din and ps/2 and also
that data is transmitted with a clock and data line.  We think they stay at
0v normally and use ttl.

We want to know:  Pinouts of both connectors, data transmission protocol
(the actual key to data is not crucial yet but we want to know how a byte
of info is transmitted), voltage levels and any other details.


Thanks very much,

                Tim Kerby and Nicholas Humfrey  (note our unusual surnames - we
are very
rare people!)


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Personal Web Pages: http://web.ukonline.co.uk/members/tim.kerby/
PIC Site: http://web.ukonline.co.uk/members/tim.kerby/pic/
The PIC Pages are under construction and I am looking for projects
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