・掌握S3C2410X芯片的I/O控制寄存器的配置；
・通过实验掌握ARM芯片使用I/O口控制LED显示；
・了解ARM芯片中复用I/O口的使用方法。-* Master S3C2410X chip I/O control register configuration * master the ARM chip, through experiments using the I/O port control LED display * understand the ARM chip multiplexed I/O port is used.
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