Claude Shannon, in 1952, demonstrates and explains the operation of the electro-mechanical maze solving mouse machine, Theseus, that he and and his wife and collaborator Betty Shannon developed.
More info:
"Mighty Mouse", MIT Technology Review, 2019-12-18
"Betty Shannon, Unsung Mathematical Genius", Scientific American, 2017-7-24
"Incidentally the things we learn for the telephone system have other applications."
The original video I liked to, below, has since been intentionally corrupted with auditory and visual noise and is almost unwatchable. Perhaps this was done to get around copyright violations. How ironic for the source to be heavily corrupted while the communication channel is barely corrupted by noise, or at least is error corrected.