OK, kids, gather round old Gramps as he shows off the first calculator he ever owned. He got it as a present for passing his O-levels. (Actually, even if I’d had the calculator prior to taking my O-levels, I wouldn’t have been allowed to use it for the exams. Unlike math tests today, It was slide rules only in those days.) Are you gathered round? Here it is, the Litton Royal Digital 5-T from 1973. […]
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