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Early drawings and computer work
Images made by programmable drawing machines
Early machines were simple and not very accurate although it was possible to draw with light onto film as well as pen. The computer work was carried out on a 1969 vintage Hewlett Packhard 9125A Calculator Plotter, programmed in Octal with a very slow output and only 4K of memory. The slowness prompted a switch to analogue machines but in the event the HP ceased to work and the parts were cannibalised into other machines.
HP computer plots enhanced in Photoshop