本例子说明如何用pic16f690来控制adf4360-4，可同时支持两个频点输出。程序内还包含3*4键盘实现源码。pic16f690只有20个引脚，该程序已调试通过，得到应用，极具参考价值。-This example shows how to use the pic16f690 to control adf4360-4, which can support two-frequency output. Within the program also contains the source code to achieve 3* 4 keypad. pic16f690 only 20 pins, the program has been debugged, applied, great reference value.