Tag Archives: telegraph

Mini-Museum of Computing History

Posted on 2022-10-26 by M. Eric Carr

Welcome page for the Mini Museum of Computing History, in Drexel University’s ELS Department. Continue reading →

Posted in Drexel, Mini Museum, Nostalgia | Tagged card punch, computing, computing history, history, history of computing, mini museum, morse code, Morse relay, museum, piano roll, player piano, punched card, slide rule, telegraph, telegraphy | Leave a comment

Mini Museum: Morse Telegraph Relay

Posted on 2022-08-23 by M. Eric Carr

A Morse 4-C relay from circa 1900 is investigated and made to work again, driven by a modern microcontroller. Continue reading →

Posted in Digital, Mini Museum, Nostalgia | Tagged electromagnet, morse, morse code, relay, telegraph | Leave a comment

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