I have found that computer tablet or white board usage can definately aide in my students education, but in the field that I teach I found that more students retain the information better and have a greater understanding of a systems operation through a "cause and effect" delivery method. I have lectured and/or used white board presentations on a many topics and found that allowing the student to see the normal operation of a given system and then "causing" a fault within it's normal operation and then watching the "effect" from that fault has helped more students retain their maximum learning potential than most other approaches and it seems to do so without the need to hold their hand, so to speak.