bruce wrote:
Even better - it was a 110 baud connection. The teletype was probably 72 characters wide, all capitals. The paper tape had up to 8 full size holes and one small alignment hole. You were probably punching 7 bit ASCII code, possibly with parity. The aliment hole was used by a toothed sprocket to move the tape on the teletype, but could also be used as a clocking bit for optical readers.i recall my 1st use of a time share on the local university's machine.. my 7th grade math teach was taking colleges courses, in like 1972.. and she had access to a tele-type machine with the dialup phone couple hooked to the machine... the machine created rollup punched out paper spools that we had written our "basic" programs on.... i thought punch cards were a step up when i got into college later on! i say all this as i cruise on a 4G-Mem/250G-Drive/17" laptop on a fast wireless network! my god i'm old!!!
There was also a 5 bit version that didn't use ASCII... Both types also had a 20ma or 60ma current loop interface. Great for long distance wired serial communications. The bast part is that were almost entirely mechanical, with very little electronics.
The teletype was also popular with early home computers like the Altar 8008, and other S-100 systems. CP/M had teletype support.
Now I feel old - I owned a model 33 teletype. Mikkel -- A: Because it messes up the order in which people normally read text. Q: Why is top-posting a bad thing?
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