PC:
Right-click the Windows Start Menu at the bottom left of the screen
Click System in the menu that pops up. The page displayed will furnish both your Device and Windows specifications
If you do not see System in the menu, type the word into the search feature and click System App on the menu which appears.
Mac:
From the Apple menu in the corner of your screen, choose About This Mac
The specifications for the macOS and device specifications will be displayed