And while this calculator wasn't an ordinary one, the feat is just amazing.
Let's see how he did it.
Hacking calculator to install Windows 10 IoT Core
The developer, who goes by the name Ben, shared a series of images on Twitter revealing the effort to put Windows 10 IoT (Internet of Things) edition on a calculator.
He didn't specify the exact steps but the installation was ultimately successful as he shared a couple of images showing the boot menu of the OS running on the tiny device.
What kind of calculator he used?
As basic/scientific calculators aren't capable enough to support Windows 10, Ben used a slightly more powerful HP Prime Graphing Calculator for the installation.
At first, his technique didn't work due to the small screen of the device and resulted in a pre-OS error while booting. But, the second attempt was successful, giving him access to Windows Boot Manager and Windows 10's boot UI.