文件名称:qdq
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１、8255a基本输入输出:能够在自行设计的接口开发板上，实现拨动
开关控制LED的亮灭。
2、流水灯设计实现:能够在自行设计的接口开发板上，实现拨动不同开关控制LED灯的变化。例如，K1从左往右，K2从右往左，K3从中间向两边，K4从两边向中间依次亮灭变化。
3、数码管：能够在自行设计的接口开发板上，实现拨动不同开关，数码管显示该开关位置值（1-8）；若同时拨动两个以上开关，则数码管显示“E”。
-1,8255 a basic input and output: the ability to design their own interface development board realize toggle switch to control the LED light off. 2, water lights designed to achieve: the ability to design their own interface development board to achieve different toggle switch to control the LED lights change. For example, K1 from left to right, K2 from right to left, K3 from the middle to both sides, K4 from both sides toward the middle turn light off change. 3, the digital: the ability to design their own interface development board to achieve different toggle switch, digital display of the switch position value (1-8) if two or more simultaneously toggle switch, digital display " E" .
开关控制LED的亮灭。
2、流水灯设计实现:能够在自行设计的接口开发板上，实现拨动不同开关控制LED灯的变化。例如，K1从左往右，K2从右往左，K3从中间向两边，K4从两边向中间依次亮灭变化。
3、数码管：能够在自行设计的接口开发板上，实现拨动不同开关，数码管显示该开关位置值（1-8）；若同时拨动两个以上开关，则数码管显示“E”。
-1,8255 a basic input and output: the ability to design their own interface development board realize toggle switch to control the LED light off. 2, water lights designed to achieve: the ability to design their own interface development board to achieve different toggle switch to control the LED lights change. For example, K1 from left to right, K2 from right to left, K3 from the middle to both sides, K4 from both sides toward the middle turn light off change. 3, the digital: the ability to design their own interface development board to achieve different toggle switch, digital display of the switch position value (1-8) if two or more simultaneously toggle switch, digital display " E" .
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