Babbage designed the machine to produce printed mathematical tables. Difference Engine No. 2 has an output printer that prints each 31 digit results in ink. The machines also imprints the results in a soft material (such as plaster). The plaster cast would then be used to make a printing plate.
Photo credit: Jitze Couperus
Babbage's Difference Engine and other historic computers
by Bill Detwiler | May 26, 2010, 6:34am PDT | Image 11 of 24
Output printer
Output printer - Image 11 of 24
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About Bill Detwiler
Bill Detwiler is Head Technology Editor of TechRepublic. Previously, he worked as a Support Tech and IT Manager in the social research and energy industries.
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