Tag Archives: computers

in the days before CAD

Posted on February 1, 2022 by Robert

Toronto. Computer Aided Design (CAD) made huge changes in how products were manufactured.  Before CAD, photography stepped in to speed up aircraft production. This article from the February 1941 edition of Popular Mechanic explained how a giant camera and projector … Continue reading →

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mom says screens are bad for your eyes

Posted on September 3, 2019 by Robert

Toronto. This copy of the frontispiece of an 1876 book at the TPL titled, “Shadows on the Screen; or, An Evening With The Children” reminds us that “screens” have been around for well over a century now. As a kid … Continue reading →

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