Comment PC O'scope (Score 1) 321
Hi, Cliff.
I saw your request for suggestions on low-cost PC o'scopes for classroom instruction. I'd suggest you check out the following link. It's not for a PC o'scope per se, but for a complete lab set for teaching electronics and RF for a small class that includes demo circuit boards, multimeters, and yes, even a PC o'scope. The whole kit is available from the American Radio Relay League as part of their Education and Technology Program. I'm not positive, but I believe the kits are free to qualifying schools. The kit was designed to supplement a curriculum available free to anyone.
http://www.arrl.org/news/stories/2004/02/12/3/?nc= 1