In the days when Powerpoint was spelt OHP, I went to RAF Newton for one of the very early courses on computer based training. It was interesting. it might even have involved an early BBC computer, but at the end, the presenter noted I was not overly impressed. I explained there was only one power socket in the classroom I usually used at Halton, and someone had fitted the roller board over it, so I could not plug in an OHP. let alone a computer.