* 程序描述 : *

* 程序分两大部分，当开发板上电的时候拨码开关的第一位是闭合（ON）的状态 *

* 运行LOOP1循环，矩阵键盘有效，数码管显示按键值，同时将按键值通过串口发*

* 送出去。 *

* 当开发板上电的时候拨码开关第一位是打开的(OFF)的状态，则独立键盘有效 *

* 按下K1则逆时针点亮数码管的每一段，按下K2键则顺时针点亮数码管的每一段 *

* 同时将当前点亮数码管的数据通过RS232串口发送出去。- * Descr iption Descr iption:*

* Most of the procedures is divided into two, when the development of on-board power switch when the call is first closed (ON) status*

* LOOP1 run cycle, the effective matrix keyboard, digital display key values, and keys will be issued through the serial port*

* Sent out.*

* When the development of on-board power switch when the first call is open (OFF) state, the keyboard is an independent and effective*

* Press K1 digital tube light is anti-clockwise each paragraph, press the button while K2 LED light clockwise each paragraph*

* At the same time, digital tube light of the current data sent through the RS232 serial port.