中断方式的A/D采集系统使用ADC0809的通道0，接入0-5V的直流电压，用W1调整模拟电压值，A/D的转换结束信号EOC接在8259A的IRQ3上，采集100个数据并存入内存中，同时将采集的16进制数据显示在数码管上。请多次调整0-5V的电压值（旋动W1旋钮），进行A/D采集，并观测内存中的数据的变化情况。-Interrupt the A/D acquisition system using ADC0809 channel 0, access to 0-5V DC voltage, using W1 to adjust the analog voltage value, A/D conversion end signal EOC then the IRQ3 in 8259A, the 100 data collection co-exist into memory, at the same time, 16-band data collected in the digital tube display. Requested several times to adjust 0-5V voltage value (rotary knob moving W1) for A/D collection, and observation data in memory changes.