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[[File:Calcomp 565 drum plotter.jpg|thumb|A Calcomp 565 drum plotter.]]
[[File:IBM 1627 plotter detail.mw.jpg|thumb|upright|Closeup of Calcomp plotter right side, showing controls for manually moving the drum. Similar controls on the left move the pen carriage.]]
The [[Calcomp]] 565 drum [[plotter]], introduced in 1959, was one of the first [[computer graphics]] output devices sold. The [[computer]] could control in 0.01 inch increments the rotation of an 11 inch (280 mm) wide drum and the horizontal movement of a pen holder over the drum. Pen was pressed by a spring against paper scrolling across the drum. A [[solenoid]] could lift the pen off the paper. This arrangement allowed line drawings to be made under computer control. Years later Calcomp made model 563 which was using 30" wide drum.
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