Actually, for a show so closely associated with the slashdot-techie lifestyle, Doctor Who didn't have much to do with computers early on. This article by Peter Salus traces the formative years, e.g. "In January 1970, Jon Pertwee (Doctor #3) acquired a Cambridge scientist (Caroline John as Liz Shaw) as his companion, which might lead the unsuspecting viewer to think that a firmer computer science basis might ensue. But only in April did Liz exhibit her technical knowledge (by recognizing a Geiger counter reading)." And then we get to K-9....."
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