It's telling that MIT still lectures with blackboards while other universities spend oodles of dollars on expensive electric whiteboards, projectors and whatnot.
Ever noticed when a lecturer writes a sentence on the chalk board, the only sound in the room is the sound of chalk? That isn't efficient use of time.
I do use an electronic Wacom tablet when possible, so that I can at least give out pdfs of the lectures.
Don't blame the medium for poor public speaking skills. I was just in a 2-day classroom setting this week and the presenter was brilliant - switching from slides, which they annotated with a digital pen while presenting, to whiteboard, to discussion seamlessly, without losing interest or focus from the students.
Public speaking is a skill like any other that any educator needs to be good at. Don't blame the medium for your educator's poor public speaking skills.
One of my favorite education-related blogs is University Diaries, by Margaret Soltan (an English professor at George Washington University). She writes quite entertainingly and excoriatingly about the use of PowerPoint as an alternative to teaching: http://www.margaretsoltan.com/?s=powerpoint
No hype, no expensive toys, just the right tech to solve the right problems without getting in your face.
Similarly, when computers are used sensibly in the classroom they are tools applied to certain parts of the instruction, and not the only medium of instruction.
That's true regardless of the equipment manufacturer.