electro-Physics: 3.3 volts

From: John Allain <allain_at_panix.com>
Date: Thu Dec 9 20:30:20 2004

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
Received on Thu Dec 09 2004 - 20:30:20 GMT