until 4-5 years back, my wife's lab still owned some old scientific equipment whose control software ran on DOS. they'd dumped another piece of equipment a few

until 4-5 years back, my wife's lab still owned some old scientific equipment whose control software ran on DOS. they'd dumped another piece of equipment a few years before that which ran an embedded DOS system, and booted/ran off of a 1.44MB floppy. (not a good design decision for long lasting hardware.) both pieces of hardware were sold to folks who intended to use them.