PLC's Versus Relays

Does anyone know of a good poerpoint presentation that discusses the advantages of PLC's versus relay control panels. What I really need are some good pictures of applications. Please advise if you know of a good reference.

Thanks

Paul

Have you talked to Joel ?

Thread From Somebody Else In The Class

Well, I don't think PowerPoint was invented yet when people realized they should use PLCs instead of relays. Come to think of it, personal computers were an itch on the horizon at that time.

I wonder if your instructor wanders around the campus asking people, "What should I give Paul for a grade?"

OG