How to Add Another Keyboard Language on Windows 10
Windows offers an on-screen keyboard that lets you type even if you don't have access to a physical keyboard. It's particularly useful with a touch screen, but you can also use it to type with a mouse–or even to type with a game controller from your couch.
On Windows 10 and 8, there are actually two on-screen keyboards: the basic touch keyboard you can bring up from the taskbar, and a more advanced on-screen keyboard in the Ease of Access settings. We'll show you how to open both.
Windows 10
To quickly access the keyboard from the taskbar on Windows 10, right-click the taskbar and ensure the "Show touch keyboard button" option in the context menu is enabled.
You'll see a keyboard icon appear near your system tray, or notification area. Click that icon or tap it with your finger to pull up the on-screen keyboard.
Once you've opened the on-screen keyboard you can tap or click the buttons to send keyboard input. It works just like a normal keyboard would: select a text field by clicking or tapping in it and then use the on-screen buttons with your finger or mouse.
The icons in the top-right corner allow you to move or enlarge the keyboard. The keyboard button at the bottom of the on-screen keyboard allows you to select different layouts.
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There's also a more advanced on-screen keyboard, which is part of the Ease of Access settings. To access it, open the Start menu and select "Settings." Navigate to Ease of Access > Keyboard and activate the "On-Screen Keyboard" option at the top of the window.
This keyboard includes quite a few more keys, and functions more like a traditional, full PC keyboard than the touch keyboard does. It's also a normal desktop window that you can resize and minimize, unlike the new touch keyboard. You'll find some additional options you can use to configure it if you click the "Options" button near the bottom-right corner of the keyboard. You can pin it to your taskbar like you would any other program if you'd like to launch it more easily in the future.
You can also access this keyboard on Windows 10's sign-in screen. Click the "Ease of Access" button at the bottom-right corner of the sign-in screen–to the left of the power button–and select "On-Screen Keyboard" in the menu that appears.
Windows 8 and 8.1
Windows 8 and 8.1 work similarly to Windows 10, but the toolbar option is in a slightly different place. To access it, right-click your toolbar, point to "Toolbars," and ensure "Touch Keyboard" is checked.
You'll then see a touch keyboard icon appear to the left of your system tray, or notification area. Click or tap it to open the touch keyboard.
You can also open the traditional on-screen keyboard on these versions of Windows, too. To do so, right-click the Start button on the taskbar on Windows 8.1, or right-click in the bottom-left corner of your screen on Windows 8. Select "Control Panel." In the Control Panel window, click "Ease of Access," click "Ease of Access Center," and then click "Start On-Screen Keyboard."
You can pin the keyboard to your taskbar to access it more easily in the future, if you like.
You can also access the on-screen keyboard on Windows 8's sign-in screen. Click or tap the "Ease of Access" icon at the bottom-left corner of the sign-in screen and select "On-Screen Keyboard" in the menu that appears to open it.
Windows 7
On Windows 7, you can open the on-screen keyboard by clicking the Start button, selecting "All Programs," and navigating to Accessories > Ease of Access > On-Screen Keyboard.
You'll also find a "Start On-Screen Keyboard" button in the Control Panel's Ease of Access Center, but that does the same thing as launching the keyboard directly.
For easier access in the future, you can right-click the "On-screen keyboard" icon on your taskbar and select "Pin this program to taskbar."
It doesn't look quite as slick as it does on Windows 8 and 10, but the on-screen keyboard works similarly. Select a text field and start typing with your mouse, finger, or whatever other input device you have.
To use the on-screen keyboard on Windows 7's sign-in screen, click the "Ease of Access" button at the bottom-left corner of the screen and check the "Type without the keyboard (On-Screen Keyboard)" option in the list that appears.
The on-screen keyboard is for more than just typing text. Keyboard shortcuts work on it, too, just as they would on a physical keyboard. Click or tap a modifier key–like the Shift or Alt keys–and it'll stay "pressed down" until you select the next key you want to type.
How to Add Another Keyboard Language on Windows 10
Source: https://www.howtogeek.com/240288/how-to-use-the-on-screen-keyboard-on-windows-7-8-and-10/