Teletype

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Uploaded by on Sep 4, 2008

Model-33 ASR Teletype -- Connected to an iMac via a USB to Serial Converter & a homebrew RS-232 to current-loop interface.

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Howto & Style

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Uploader Comments (Paleoferrosaurus)

  • Makes me want to learn Morse code...

  • @CrystalHunter1989 No Morse code here... This one runs the 1963 version of ASCII. Earlier models used a 5-bit code derived from Baudot. The biggest difference is the use of variable length symbols in Morse (either American Morse or International Morse) versus fixed-length MARK and SPACE transitions... Thanks for commenting, though!

  • You forgot to turn your parity checking on.

  • @neuralwarp Actually, It's set to "mark" parity!

  • @Paleoferrosaurus Ooh, that's a new one on me. How does "mark parity" work?

  • @neuralwarp Parity bit is always set -- if the bit is clear, you've got a problem... Not particularly useful in detecting "real" errors, but it let the system wonks claim that they "supported" parity checking!

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All Comments (16)

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  • Got a good beat, easy to dance to. I gave it about an 85.

  • I used to operate one of those for Blue Star Line in the early 80's. It was quite a challenge to prepare a message. The first email!

  • So very nice.

  • The ougoing tape was used to be ripped off and rolled up in a 8 shape around the thumb and the little finger of one hand...it was the first thing you had to learn when working with TTY!.

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