[GreenKeys] The last of the Pasco 35 ASR photos .. for a while

[Jack]

The last three digits of the Teletype part number on the chip
is the chip type. I think they're all RTL.



-----Original Message-----
From: GreenKeys [mailto:greenkeys-bounces at mailman.qth.net] On Behalf Of
Chris Elmquist
Sent: Monday, August 10, 2015 5:35 PM
To: Gil Smith <gil at baudot.net>
Cc: greenkeys <GreenKeys at mailman.qth.net>; Pete Lancashire
<pete at petelancashire.com>
Subject: Re: [GreenKeys] The last of the Pasco 35 ASR photos .. for a while

On Monday (08/10/2015 at 03:13PM -0700), Gil Smith wrote:
>    Or DTL, or RTL?

Maybe...  but there were a lot of mid-70's date codes so I made the jump to
TTL on that basis.

Chris

>    -------- Original Message --------
>    Subject: Re: [GreenKeys] The last of the Pasco 35 ASR photos .. for a
>    while
>    From: Chris Elmquist <[2]chrise at pobox.com>
>    Date: Mon, August 10, 2015 2:44 pm
>    To: Pete Lancashire <[3]pete at petelancashire.com>
>    Cc: greenkeys <[4]GreenKeys at mailman.qth.net>
>    On Monday (08/10/2015 at 11:03AM -0700), Pete Lancashire wrote:
>    > The 9140. Pictures of, and of each board
>    >
>    > [5]https://goo.gl/photos/xZrMR9WthHwgYA359
>    Wow. I can't find a single DIP package in any of those photos that is
>    not a custom house numbered part. Moto, Fairchild, NS, TI ... all of
>    the players but every one is house numbered.
>    I assume that's all 7400-series TTL?
>    Amazing.
>    --
>    Chris Elmquist NÃJCF

--
Chris Elmquist

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