Either the machines used to purchase lottery tickets directly (kiosk-style), or the machines used by a cashier to process one's lottery ticket. Over time, they have evolved from an x86 base and a Windows or DOS operating system, to x86 and ARM CPUs with either Windows or Linux-based operating systems.

Quite like the Wisconsin (?) lottery machine, the Illinois lottery also uses Linux. Close economic linkage between the two, maybe?

https://old.reddit.com/r/mildlyinteresting/comments/80xngr/my_works_lottery_machine_apparently_uses_linux/

It was basically an old DOS box inside, so it wasn’t much of a stretch software-wise

Good luck finding one of these, although apparently it’s quite simple to run these things. Simply insert a disk and make it auto-run?

https://command-tab.com/2006/03/24/doom-lottery-machine/

https://www.reddit.com/r/itrunsdoom/comments/9c0az9/doom_on_a_lottery_machine/

This device runs an operating system which is known to emulate various devices with EOPs. See the DOS page.

The OS that runs by default on these systems.

https://www.reddit.com/r/mildlyinteresting/comments/b79rlu/my_works_lottery_machine_runs_on_linux/