inexpensive HP 39gs calculators from AliExpress working great for newRPL

[SammysHP]

They are most likely rejected units because of small defects. Mine has issues with one column of the display and you can see the scratches from throwing them all into a box. Apart from that you get an excellent calculator for cheap and save some plastic from being burned somewhere in a power plant.

Currently I'm working with Claudio on some bugfixes in newRPL (like creating a new contrast table).