Summagraphics Bit Pad One – 1980s. A digitising unit that dates back to the early 1980s: http://www.computinghistory.org.uk/det/16811/Summagraphics-Bit-Pad-One/
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See full size image Caption: Summagraphics Bit Pad One - 1980s Description: Summagraphics Bit Pad One - 1980s. A digitising unit that dates back to the early 1980s: http://www.computinghistory.org.uk/det/16811/Summagraphics-Bit-Pad-One/ Alt text: Image credit: Image credit: © Crown Copyright. All rights reserved. Photo subject date: |