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To: Doug McIlroy <doug@cs.dartmouth.edu>
From: Ralph Corderoy <ralph@inputplus.co.uk>
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Date: Tue, 14 May 2019 20:36:39 +0100
Message-Id: <20190514193639.8E7132199F@orac.inputplus.co.uk>
Subject: Re: [TUHS] VCF East
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Hi,

Doug wrote:
> About the creator of the sensing chessboard: It was Dave Hagelbarger,
> as Rob said

And if others are thinking Dave sounds familiar, like me, it's because
he was co-developer of the CARDIAC.
https://en.wikipedia.org/wiki/CARDboard_Illustrative_Aid_to_Computation

-- 
Cheers, Ralph.