If you still have a device running Windows 10 but doesn't meet the hardware requirements for Windows 11, you can still upgrade to the latest version of the operating system using an in-place upgrade ...

Called ZARDOS, the operating system is built to run on an Arduino MEGA although a smaller version is available for the Uno. The Arduino is connected by a serial cable to the Minitel terminal.

China has released its first homegrown open-source desktop operating system, named OpenKylin, state media said, as the country steps up efforts to cut reliance on U.S. technology.