led程序 一个按键KEY_ON接在P1.6与GND之间，另一个按键KEY_OFF接P1.7与GND之间，按KEY_ON后LED亮，按KEY_OFF后LED灭。同时按下LED半亮，LED保持后松开键的状态，即ON亮OFF灭。

代码-Led program a button KEY_ON taken up in P1.6 and between GND, another key KEY_OFF meet P1.7 and between GND, according to KEY_ON led light after, according to KEY_OFF led out after. At the same time in LED light under half, LED to keep the key to loosen the state, that is, ON light OFF the destroyer.

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