"A bit" is an understatement. The vast majority of non-server deployments of Linux are embedded systems, and embedded systems requirements are one of the most important driving factors in its development nowadays.
I'm not sure if it shares APIs with Win32, but Windows CE runs almost half of every ATM I've ever used.
The other half seems to be powered by Windows XP.
Also cash machines.
ATM (Automatic Telling Machine) is American English for a cash machine. A teller is a bank worker who handles cash.
It's UK English too. But not as common as cash machine/cash point/hole in the wall.