Path: utzoo!attcan!uunet!cs.utexas.edu!wuarchive!cec2!dar8808
From: dar8808@cec1.wustl.edu (David A. Rochberg)
Newsgroups: comp.sys.apple
Subject: Apple II interfacing help needed
Keywords: ttl apple2 interface science
Message-ID: <1990Mar27.193210.13984@cec1.wustl.edu>
Date: 27 Mar 90 19:32:10 GMT
Sender: news@cec2 (USENET News System)
Reply-To: dar8808@cec2.wustl.edu (David A. Rochberg)
Organization: Washington University, St. Louis, MO
Lines: 16


	My chemistry teacher would like to build a digital geiger
counter, and I have agreed to help him.  We hope to build a device that
will change the output of the geiger tube into a TTL-compatible signal
(This shouldn't be too hard, but help would be appreciated) and then
measure the time between pulses with a 32.7 Khz clock (easy to build).
The part we need help with is sending the resulting two bytes of data
to the science department's Apple IIe.  Can anyone tell me how to do
this or give me references.  This is for a public high school, so there
is a shortage of money, but we are willing to spend a good deal of time
on the project.  Please e-mail responses, as I don't normally read this
group.
					Thanks in advance,
					 David Rochberg
					 david@david.wustl.edu
					 uunet!wuarchive!wubios!rock