On Thu, 12 Aug 2010 10:08:09 -0400, Shmuel Metz (Seymour J.) wrote:

>the entry level and midrange boxen
>were never bipolar.

Are you sure about that?  They were certainly not ECL or CML, but 
I thought that they were TTL or a variant of it and were constructed
of bipolar transistors.

-- 
Tom Marchant

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