In Lecture #2 (8/30/95), there is a correction on transparency
page 17.  The rate of increase in the 'density of transistors
per chip' and 'speed' for logic chips is specified as 2x in 3 years.
This is incorrect.

The textbook (H&P) specifies on Page 7 that the density per chip
(and the device speed, though not the metal wiring speed) increases 
at about 60% - 80% a year.  This means:

	now	1 yr	2 yrs	3yrs
	x	1.6x	2.5x	4.0x	assuming 60% growth, or
	x	1.8x	3.2x	5.7x	assuming 80% growth.

So you can read off the correct figures from above -- either
pessimistically as 4x in 3 years; or optimistically as about
3x in 2 years -- which latter view Homework #1, part #4 takes.

Jay