Devices meant for the analysis of electronic signals. Older ones did not have any “EOP capable” hardware, but ones from the past decades are able; they appear to run many different setups, such as x86, ARM, or MIPS, while OSes range from desktop Windows, to Windows CE and Linux variants.

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

a x86 PC with some special PCI Cards, it is possible to run any DOS or Windows 9x Software

Can run Doom, Minesweeper, and whatever else that runs on DOS or Windows 9x. Unsure what the actual base system of this scope is, but it’s likely to be Windows 98.

https://www.reddit.com/r/itrunsdoom/comments/b5gj4c/agilent_54820a_oscilloscope/

https://imgur.com/a/dDAt0iN

I can (semi-)automatically boot the oscilloscope right to the desktop

With some provided files and hacks, it is possible to access a full Windows CE desktop on this scope. Of course, it also runs DOOM.

https://ripitapart.com/2018/10/15/gaining-access-to-the-windows-ce-desktop-and-doom-on-the-keysight-dsox1102g-oscilloscope/

The Rigol MSO5000 runs Linux under the hood, and it's possible to get a root login

With some ssh over the network, this scope can run Doom off of a USB stick. Maybe other things could be ran too, considering the Linux base of this device. Has support for some of the front keys.

https://github.com/Spritetm/prboom-mso5k

https://www.youtube.com/watch?v=m2JOs0Aldq0

This oscilloscope’s operating system is unknown, but there is a very low dependency DOOM port available. Said port has been utilized for several low profile devices, not just this scope. Maybe the scope runs Linux?

https://github.com/maximevince/fbDOOM

https://www.youtube.com/watch?v=ztVI7r7C-1w