The Ferranti Mark 1 was the first commercially available general-purpose computer. Here is Alan Turing's 1950 manual for the Mark I electronic computer in PDF format https://archive.computerhistory.org/resources/text/Knuth_Don_X4100/PDF_index/k-4-pdf/k-4-u2780-Manchester-Mark-I-manual.pdf #computer #history
p24: "The Hooter". lol. 1950s PC Speaker.
@nixCraft
I know that Turing was a genius, and that he specialised often in cryptography and all, and that there is probably a very good reason, but really .. WTAF..
@jaark @nixCraft it's Baudot encoding, from the Victorian age of telegraphy Looks like a variation on ITA2 here:
https://en.m.wikipedia.org/wiki/Baudot_code
See also 'baud rate' and 'tty'...