说明：  这是我们学习微机接口时使用的PPT，是我们院老师编写的。该PPT内容完整，条理清楚。适合学习微机的学生作为辅助工具。
(This is our learning computer interface used in the PPT is prepared by the House of teachers. The PPT content is complete, the presentation was clear. Computer learning for the students as an auxiliary tool.)