[GreenKeys] Fwd: Unknown TTY ICs

[Chris Elmquist]

Thanks Paul!  That's great info and cool history.

Is it OK if I share your posting back to the Classic Computing list where
the discussion originated?

Chris N0JCF

On Sunday (02/01/2015 at 02:05PM -0600), Paul Kasley wrote:
> Teletype did indeed make their own ICs and they did indeed mark them “TTY”. My first assignment as a co-op in 1973 at the T7 R&D facility was to profile PN junction depths on diffused wafers. The R&D fab was on the first floor of T7. Just off the T5 cafeteria was the epitaxial deposition lab. The PMOS manufacturing facility was on the north side of T3. 
> 
> TTY custom ICs went into the model 43, the model 40, and certainly other products that came after my time there.
> 
> The initial process was P-channel and they did eventually make N-channel devices.
> 
> Tag Waggener was a WECO guy that came to TTY in ‘73 to lead the effort. He chronicled it in “Teletype, We made That Data Move” (self-published on lulu.com). 
> 
> -Paul Kasley W9TS
> 
> From: Ed Sharpe Archivist for SMECC via GreenKeys 
> Sent: Sunday, February 01, 2015 11:35 AM
> To: chrise at pobox.com ; greenkeys at mailman.qth.net 
> Subject: Re: [GreenKeys] Fwd: Unknown TTY ICs
> 
> and  would teletype  use tty as a product  id?
> 
> In a message dated 2/1/2015 10:11:11 A.M. US Mountain Standard Time, chrise at pobox.com writes:
>   From the Classic Computing mailing list.
> 
>   Did Teletype eventually have their own ICs?  I suspect someone else
>   would have designed them for them and then Teletype put their own label
>   on but this is the first I have heard of "TTY" ICs.
> 
>   One theory is they are from a model 43...??
> 
>   Chris N0JCF
> 
>   ----- Forwarded message from Kyle Owen <kylevowen at gmail.com> -----
> 
>   > Date: Sat, 31 Jan 2015 21:11:44 -0600
>   > From: Kyle Owen <kylevowen at gmail.com>
>   > To: "General Discussion: On-Topic and Off-Topic Posts"
>   >     <cctalk at classiccmp.org>
>   > Subject: Unknown TTY ICs
>   > 
>   > Can anyone identify these TTY ICs? A friend gave them to me, but doesn't
>   > recall what they came from.
>   > 
>   > http://i.imgur.com/AIfiOyY.jpg
>   > 
>   > Thanks,
>   > 
>   > Kyle
> 
>   ----- End forwarded message -----
> 
>   -- 
>   Chris Elmquist
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Chris Elmquist