Description: ⒈ understand traffic lights management familiar with the basic working principle of ⒉ 8259A interrupt controller of the working principle and application programming 8255A ⒊ familiar parallel interface various working methods and applications ⒋ familiar with the 8253 counter/timer of the working methods and application programming, master regular use of a combination of hardware and software approach
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新建 Microsoft Word 文档 (3).doc