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When I was at highschool, we were taken to Sydney University to see SILLIAC, their first (I believe) computer. It took up the best part of a room, had something like 3000 valves (vacuum tubes), consumed over 30kW and had about 32k memory. Sometime later, my first business computer, a Microbee, was in a box the size of the Oxford Dictionary, had 64k and a 3.5" disk drive with single sided disks costing $10 each.
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