OK, let's get this one back into play.
How come that calculators, and numerical keypads on computer keyboards have 7-8-9 along the top row ... whilst telephones, mobile phones
etc. have 1-2-3?
Which is better (more intuitive, or logical), and which should medical equipment use? Assuming, that is, that we want to standardise.
Meanwhile ... I have two "well known" infusion pumps right here in the workshop. One has the 1-2-3 layout whilst the other has (yes, you've guessed it) the 7-8-9.
