说明：  此程序为一完整频率测量显示程序,所测频率较高(2MHZ),使用4兆晶振,程序兼有启动看门狗及对其管理功能.
(This procedure is a complete frequency measurements show that the procedure, the measured high frequency (2MHZ), the use of 4 trillion oscillator, watchdog restart both procedures and their management capabilities.)