We didn't have that in the eight-millimeter days. We had to lug a projector, we had to plug it in to somebody's wall, put up a screen and show it to someone patient enough to sit there for five minutes and watch.

VOA: special.2011.06.20

I wanted to show an example with real data that I computed and that's what's up on the screen.

我用真实的数据做了一个案例,请看上方的屏幕。

耶鲁公开课 - 金融市场课程节选

There's a little video player on the right side of The screen that allows the student or the professor Teaching from these materials to bring up those Materials and show the students. So this allow The students to explore materials on their own.

屏幕右边有个小放映机,能让学生和用这些资料教学的教授,提取出这些媒体资料,并播放给学生看,这允许学生自己发掘资料。

麻省理工公开课 - 媒体、教育、市场课程节选