Sketchpad (1963) 2 of 3 2 D Graphics
This is part 2 of 3, demonstrating the 2D capabilities of Sketchpad, including vector scaling and instances. Periodically throughout computer history there emerges a pinch point, a single moment where many prior technologies converge, and upon which many subsequent technologies depend. Herman Hollerith s 1890 census tabulator is one wellknown instance. Another, somewhat lesserknown, is Ivan Sutherland s Sketchpad, developed at MIT in the early 1960s, running on the transistorbased TX2 computer.
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