说明：  微机原理实验的实验报告，包括开关状态显示实验，定时器/计数器实验，8259中断实验，A/D转换实验等五个实验的实验报告和汇编源程序
(Microcomputer Principle experiments are reported, including the switching status display experiment, timer/counter experiments, 8259 interruption experiments, A/D conversion experiments, five experiments are reports and compilation of source code)