3 ms·

07:54 - A pure-mechanical teletypewriter (Baudot/Hughes style, with a piano keyboard) is controlling the typesetting apparatus automatically, reading characters

07:54 - A pure-mechanical teletypewriter (Baudot/Hughes style, with a piano keyboard) is controlling the typesetting apparatus automatically, reading characters from a paper tape. The characters are encoded in ITA-2, a revised version of the original 1870 Baudot code. It's how a real /dev/tty looks like, and what we used before EBCDIC and ASCII. Digital communication in the Victorian era. 24:35 - PDP-11. a quick flash among a lot of other computers. Only a single row of the keys on the front panel was showed, but I can't be wrong - you know just from its color.

082349872349872 6y ago
___________ | ooo . | | ooo . | | ooo .o | | o . | | oo .o | | o . | | oo .o o| | ooo .oo | | oo . o| | oo o. | | o. o | ___________
- pleonastic 6y ago
  That "baudot" code looks like it's 7 bits wide (4 bits to the left of the feed holes represented by "." and 3 bits to the right) Were there extra spaces inserted somewhere?
  - 082349872349872 6y ago
    It's meant to be an homage (programage?) to /usr/games/ppt but my memories could easily have suffered bitrot. There was an extra newline. (according to https://en.wikipedia.org/wiki/Baudot_code https://en.wikipedia.org/wiki/Baudot_code AT&T used post-1963 encodings)
    - pleonastic 6y ago
      Oh right, it's just ASCII. I initially thought that it was a 5-bit Baudot code until I realised that it didn't make much sense in any 5-bit encoding. I was trying to work out how an editor would've screwed up the formatting without breaking the vertical line on the right which probably why I was so confused. I'm amused to see that ppt(6) is still kicking around in OpenBSD (in the "games" base installation package) and is probably still sitting quietly on many machines today (have Apple removed it from OS X?).
      - 082349872349872 6y ago
        yes, they have :(
rbanffy 6y ago
> 24:35 - PDP-11 I saw Amdahl (22:11), IBM (24:42), Data General (24:01) and DEC and endless IBM disk drives. Making everything talk to everything else should have been quite an accomplishment

082349872349872 6y ago

___________ | ooo . | | ooo . | | ooo .o | | o . | | oo .o | | o . | | oo .o o| | ooo .oo | | oo . o| | oo o. | | o. o | ___________

pleonastic 6y ago
That "baudot" code looks like it's 7 bits wide (4 bits to the left of the feed holes represented by "." and 3 bits to the right) Were there extra spaces inserted somewhere?
- 082349872349872 6y ago
  It's meant to be an homage (programage?) to /usr/games/ppt but my memories could easily have suffered bitrot. There was an extra newline. (according to https://en.wikipedia.org/wiki/Baudot_code https://en.wikipedia.org/wiki/Baudot_code AT&T used post-1963 encodings)
  - pleonastic 6y ago
    Oh right, it's just ASCII. I initially thought that it was a 5-bit Baudot code until I realised that it didn't make much sense in any 5-bit encoding. I was trying to work out how an editor would've screwed up the formatting without breaking the vertical line on the right which probably why I was so confused. I'm amused to see that ppt(6) is still kicking around in OpenBSD (in the "games" base installation package) and is probably still sitting quietly on many machines today (have Apple removed it from OS X?).
    - 082349872349872 6y ago
      yes, they have :(

rbanffy 6y ago

> 24:35 - PDP-11 I saw Amdahl (22:11), IBM (24:42), Data General (24:01) and DEC and endless IBM disk drives. Making everything talk to everything else should have been quite an accomplishment