[GreenKeys] Teletype Model 33 ASR vs. ASR33

Wa3frp wa3frp at aol.com
Sun Aug 14 14:42:50 EDT 2011


Possibly ASR33 originated in the MITS documentation.

Another MITS document also this transposition and also includes another typo - ASR becomes ACR.

The Computer Notes newsletter shown in marketing section has this paragraph. "The MITS-MOBILE is a camper van equipped with an Altair BASIC language system. Included is an Altair 8800, Comter 256 computer terminal, ACR-33 teletype, Altair Line Printer, Altair Floppy Disk and BASIC language."








-----Original Message-----
From: Chris Elmquist <chrise at pobox.com>
To: Christian Gauger-Cosgrove <captainkirk359 at gmail.com>
Cc: tony.podrasky <tony.podrasky at gmail.com>; Wa3frp <wa3frp at aol.com>; greenkeys <greenkeys at mailman.qth.net>
Sent: Sun, Aug 14, 2011 11:43 am
Subject: Re: [GreenKeys] Teletype Model 33 ASR vs. ASR33


On Sunday (08/14/2011 at 11:15AM -0400), Christian Gauger-Cosgrove wrote:
 
 The swapping of the type designation (KSR, ASR, RO) and model number
 on teletypes is due to the computing field. On machines that spoke
 ASCII the model 33 was a far, far more common terminal then it's more
 robust cousin the 35. This was due to cost, for example an excerpt
 from the 1970 price list for the DEC PDP-15:
Absolutely.  I was going to respond similarly--  I have in front of me
he assembly manual for the MITS Altair 680b microcomputer (c) 1976,
hich throughout refers to ASR33/KSR33 when discussing the 20mA
onsole interface.
So I think the precedent goes back at least 35 or 40 yrs.
Chris N0JCF
-- 
hris Elmquist



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