New logo: Vintage Computer Federation

Jay Jaeger cube1 at
Wed Oct 14 13:46:09 CDT 2015

On 10/14/2015 1:12 PM, Mouse wrote:
>> The hardest part is finding parts for the FPGA, sure I can use 74XXX
>> but was it out in 1975-76?
> If you mean some specific 74-series part, well, it depends on which
> one.
> But, if you mean 74-series logic in general, I think so.  Sometime
> within a year or so of '78, I was working with the stuff, and it was as
> an undergrad, so I doubt I would have been working with just-released
> logic.

Absolutely.  The TV typewriter was a Sept. 1973 article, and it used
7400 series logic (along with some Signetics stuff).

My PDP-8/L, PDP-12 and PDP-11/20 are all chock full of the stuff -
mostly SSI but a little MSI.

My TI TTL Data Book is copyright 1973, and I have not come across much
in the 7400 series TTL that isn't in there.

(On the other hand, the EE lab course on computer design was done using
DTL logic, with the interconnects using re-purposed IBM unit record
machine plugboards).


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