[GreenKeys] Teletype Model 33 ASR vs. ASR33

[DR HOUSE]

Chris,

It does not matter how far back the term goes.
It is still as incorrect today as it was when the computer people  
first wrote it down.

Don
K9TTY



On 14 Aug 2011, at 10:43 AM, Chris Elmquist wrote:

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
the assembly manual for the MITS Altair 680b microcomputer (c) 1976,
which throughout refers to ASR33/KSR33 when discussing the 20mA
console interface.

So I think the precedent goes back at least 35 or 40 yrs.

Chris N0JCF

-- 
Chris Elmquist

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