Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!ucsd!pacbell.com!news
From: perl@pbseps.PacBell.COM (Richard Perlman)
Newsgroups: comp.sys.mac.hardware
Subject: Serial Port Keyboard wanted
Message-ID: <1990Nov28.005219.20033@PacBell.COM>
Date: 28 Nov 90 00:52:19 GMT
Sender: news@PacBell.COM
Organization: Pacific Bell - Financial Management
Lines: 25


This is posted for a friend who cannot get "news".  Please
reply to him directly.

Start of forwarded:
=============================================================================
   I am looking for a keyboard that plugs into the serial port.  I want to do
reaction time experiments with the Mac.  The standard for these experiments
is millisecond timing.  The Apple Desk Top bus only communicates with the
keyboard at 60 hz (16.67ms).  However, the serial port can run at very,
very fast rates.  Hence I'd like to use the serial port as an input device
to get accurate reaction times.

  If you have any ideas on how to accomplish this please let me know.

Bill Prinzmetal - E-mail to PG00WILL@UCSBVM.BITNET
=============================================================================
End of forwarded posting


--
   "The universe is not only queerer than we imagine,
    but it is queerer than we can imagine."  J.B.S. Haldane
--
Richard Perlman   |*|  perl@pbseps.pacbell.com  |*|  (415) 545-0233