Iron Age /n./ In the history of computing, 1961--1971 -- the
formative era of commercial mainframe technology, when
ferrite-core dinosaurs ruled the earth. The Iron Age began,
ironically enough, with the delivery of the first minicomputer (the
PDP-1) and ended with the introduction of the first commercial
microprocessor (the Intel 4004) in 1971. See also Stone Age;
compare elder days.
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