Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!shadooby!ginosko!gem.mps.ohio-state.edu!tut.cis.ohio-state.edu!bloom-beacon!CALSTATE.BITNET!PAAAAAR
From: PAAAAAR@CALSTATE.BITNET
Newsgroups: comp.software-eng
Subject: Re: Timing Diagrams (& Babbage!)
Message-ID: <8910121740.AA13572@mitre.arpa>
Date: 12 Oct 89 17:18:41 GMT
Sender: daemon@bloom-beacon.MIT.EDU
Organization: The MITRE Corp., Washington, D.C.
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Charles Babbage reccomended the use of a timing diagram for complex
mechanical systems. In his case time was on the vertical/y axies(sp?)
and each concurrent part had a vertical line. Movements were plotted
horizontally about these vertical lines.  He also had a way of
showing constraints between the parts at the top of the diagram.

He published a paper which apears in his biography, but as far as
I know it had no further effect...

I had assumed that modern timing diagrams were abstractions modelled
on traces plotted by ECG/polygraphs and Osciliscopes...but am probably
wrong...
(not for the first time EITHER!)
dick botting
confused in San Bernardino