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added 14 characters in body
Raffzahn
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To my memory real bells were only a thing with mechanical printing terminals, aka TTY. After all, ringing a bell is just another lever to be moved when a character comes along - the very same way as any other printable character.

I would not know of any Glass TTY that had a mechanical bell - after all, as soon as there's a TTL circuit to do the job, adding a flip flop and a resonator is already way less expensive than adding any bell mechanic.

But there is a nice 'intermediate' step: Some early (high end) CRT terminals of the 1960s had circuitry that synthesized not just a beep but a more sophisticated bell like sound. For example die Siemens 8150 mainframe terminals and follow up series (8160 and early 9750).

Raffzahn
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