Babbage’s Barrels Realized with Miniature Reflective Infrared Optical Sensors
Thanks to Edward for sending us this tip! Edward writes:
this YouTube video shows some successful beginning steps in building an opto-electro-mechanical computer that could theoretically be built using materials available in the late 1880s.
More about that here: Neon Lamps and Photoconductors Illuminate Logic- https://www.eetimes.com/document.asp?doc_id=1279395
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