HP01 - My set up for the HP-50g (2013)

[IMPORTANT ADDENDUM: Following the advice of an expert on the HP-50g, known to me only as design4itagain in RUclips, an advice that makes complete sense, please clear flag 55 in the "flags' part of the video.]Now the original Description: Many years have passed since I published a video with my set up of the HP-49/50g. In the meantime, my set up has changed a little. My students asked me to publish a new revised version of this video and here it is. As usual, I am as opinionated as years ago, maybe even more (an occupational hazard of age). I hope you find it as useful as the original one.