文件名称:jiaotongdeng
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1、 通过可编程并行接口芯片8255A和定时器/计数器8253实现十字路*通灯的模拟控制。
2、 掌握通过8253实现准确定时的方法。
3、 进一步掌握并行接口芯片8255A的使用方法。
4、 进一步掌握8259A可编程中断控制器的使用方法。
-1, through a programmable parallel interface chip 8255A and timer/counter 8253 crossroads realize analog control traffic lights. 2, acquired through the 8253 to achieve accurate timing method. 3, and further grasp the parallel interface to use the 8255A chip. 4, to further grasp the 8259A programmable interrupt controller to use.
2、 掌握通过8253实现准确定时的方法。
3、 进一步掌握并行接口芯片8255A的使用方法。
4、 进一步掌握8259A可编程中断控制器的使用方法。
-1, through a programmable parallel interface chip 8255A and timer/counter 8253 crossroads realize analog control traffic lights. 2, acquired through the 8253 to achieve accurate timing method. 3, and further grasp the parallel interface to use the 8255A chip. 4, to further grasp the 8259A programmable interrupt controller to use.
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jiaotongdeng.doc