I live in Kuwait and during my time in college, instructors have tried various "electronic" solutions like a smart board or a basic power point presentation, avoiding being interactive with students on a blackboard.
In all cases, it was always a bad idea. The smart board had problems (virus infcetions, IP conflicts, windows crashes, ...etc.) and power point presentations were dull -- myself and many others were almost asleep and drooling (and I was sitting in the first row!).
The instructor's solution to the power point presentation pandemic? Back to the blackboard and everyone woke up.
I'm in for well-maintained labs, and would stir away from giving each student a laptop/tablet. The students would abuse those machines much more than they'd benefit from them.
Teachers are there to interact with students, but by giving each student a machine, the attention would be diverted to these boxes and teachers would start pushing content into students' boxes...