On Windows 10, there are two on-screen keyboards: the basic touch keyboard accessible from the taskbar, and a more advanced version in the Ease of Access settings. They’re particularly useful with a touch screen, but you can also use them to type with a mouse—or even to type with a game controller from your couch. We’ll show you how to open both.
Source : How to Use the On-Screen Keyboard on Windows 7, 8, and 10