OH-HP 30S overhead projector calculator

[Maximilian Hohmann]

Hello,

(09-17-2024 06:55 PM)Kees van der Sanden Wrote:  ... to drive a transparent LCD screen.

Similar screen-only devices also exist for some graphing calculators from TI as can be seen here: http://www.datamath.org/Graphing/TI-VSP92.htm

They are still being sold for the Ti-nspire so it looks as if some schools still use overhead projectors!

Regards
Max