How to open the Win7 desktop keyboard?

User question, when I typed, I accidentally pressed the keyboard combination key (12 win7 common shortcut keys) to open the desktop keyboard, now I want to turn it off, I also want to know how to open the desktop keyboard, please let me know in detail How to close the desktop keyboard?
Editing the answer: Before you explain how to open the desktop keyboard and how to close it, Xiaobian first gives you a little knowledge of the science. In many friends, the term “desktop keyboard” refers to the “on-screen keyboard” in the computer field. The on-screen keyboard is a utility that displays a virtual keyboard on the screen to allow users with moving obstacles to use pointers. Enter data for the device or joystick. The on-screen keyboard is designed to provide the lowest level of functionality for users with mobility impairments.
How to open the desktop keyboard (take win7 system as an example)
Open the Win7 screen keyboard is very simple, just click the round start button in the lower left corner of Win7 desktop, enter "ldk" in the search box of the start menu ;, and then click on the search results of the program items in the search results.
How to turn off the desktop keyboard
Methods 1. There is a small keyboard in our common input method software. Just click on this small keyboard. The displayed keyboard on the desktop will disappear.
Method 2, restart or log off the computer can be
Method 3, of course, if some desktop keyboard with X directly point X can be turned off.