说明：  用过stc单片机的知道keil里没有stc单片机，这就是个keil中的驱动，直接安装，然后就能在 device里直接看见stc的单片机了。
(SCM STC used to know there is no STC Singlechip keil, keil This is a driver of a direct installation, and then the device will be able to directly see the STC microcontroller.)