Report copyright - 8259 8255A 8253/8254see.xidian.edu.cn/faculty/lpxu/mcp/PDF/ch7-1.pdf · 二.接口和接口技术 1.接口 7.1 输入输出接口基础 接口指cpu和外设之间通过系统 总线进行连接的电路部分,是cpu与
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