electro-Physics: 3.3 volts

From: Dwight K. Elvey <dwight.elvey_at_amd.com>
Date: Fri Dec 10 12:03:16 2004

>From: "John Allain" <allain_at_panix.com>
>Today I started mothballing the VAX 6000 and noticed that a large part
>of its power supply is on 3.3 volts, now common, but probably not in 1988.
>Seems like something was invented, probably in chip design that made
>3.3 so useful. I wonder what that was, when that landmark was reached.
>(For that matter, I don't really know why 5V and
> 12V were popular, on a "first priinciples" basis.)
>Maybe we've lost some of the people on the list who can answer these
>questions, but I'm trying anyway.
>John A

 RTL was 3.6V.
Received on Fri Dec 10 2004 - 12:03:16 GMT

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