[GreenKeys] Teletype Highspeed (>100 wpm) Equipment Question
John Nagle
nagle at animats.com
Sun Sep 2 13:32:42 EDT 2012
> From: Christian Gauger-Cosgrove <captainkirk359 at gmail.com>
> Subject: [GreenKeys] Teletype Highspeed (>100 wpm) Equipment Question
> Just wanted to ask, since I'm mildly interested, what other high speed
> tape equipment did Teletype Corp. make beyond the BRPE and DRPE?
>
> Also, just to be clear, since I'm rather uneducated in this field, the
> BRPE and DRPE were only punches? Or were they also readers as well?
The UNIVAC 1107 computer used a BPRE punch, and a photoelectric
reader not built by Teletype. Teletype did make something called
the "Dataspeed" system, for high speed paper tape copying across
a phone line at 1050 WPM. (The Teletype Model 40 was also called
"Dataspeed", but came later.) Oiled paper tape dates from this
era; punch block wear was a problem at high speeds.
Towards the end of the paper tape era, there were specialized
punches and readers built for computers. These were usually
parallel drive devices, not async. Oki and Tally made paper
tape gear. Paper tape for computers was more popular in the
UK than in the US; most US machines used punched cards.
> Also, slightly off-topic of this question. Were there ever
> reperforator-transmitter sets for ASCII machines?
Yes. See Teletype Model 35ASR.
http://www.youtube.com/watch?v=DFMQ1qT_RFM
Keyboard, printer, punch, reader, and modem, in one convenient
300 pound package.
John Nagle
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