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Hewlett-Packard 9100 - Computer Calculator For Math And Science (1968) - hp41cx - 11-19-2014 11:01 PM
YouTube link
RE: Hewlett-Packard 9100 - Computer Calculator For Math And Science (1968) - Massimo Gnerucci - 11-20-2014 07:35 AM
And where it all began.
Youtube videos