Windows7 system using a digital keyboard to replace the mouse tips

you Windows7 users, have encountered this embarrassing thing, such as sometimes because forget to bring the mouse or touch pad temporary failure, how to do?

In fact, under the Win7 system, do not have to embarrass, you can use the keyboard to replace the mouse effect. You can quickly enable if you press ALT + keyboard Left "SHIFT" + "NumLock" at the same time.

The system tray will have an extra mouse icon at this point.

To adjust the speed of the mouse button to move, you can double-click the mouse icon, set up, you can use the numeric keypad to manipulate the movement of the mouse.