摘要：本文介绍了以计算机为核心.利用可编程并行接口芯片8255A的软硬件功能，实现对交通灯控制 关键词： 计算机 可编程并行接日芯片 交通灯 8255A 引言：交通灯是交通安全的关键，已广泛应用于城乡的十字路口，它的有无作为交通安全检查的重要依据，是交通秩序正常进行的有力保障。 一、实验目的 1． 了解交通灯管理的基本工作原理。 2． 熟悉8253计数器/定时器、8259A中断控制器和8255A并行接口的工作方式及应用编程。 3． 掌握多位LED显示的方法。

Packet : 我的交通灯.doc filelist

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