At the end of Chapter 2 of Pragmatic Circuits & Signals there are drill
problems (page 30, section 2.6), and also at the end of Chapter 3
(page 51, section 3.10).

The third homework set is due at the start of class on Monday 3/26/01
and consists of the following problems:

Ch2:  22, 28
Ch3:  4, 5, 7, 9