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文章以单片机MCS-8031和可编程键盘/显示器8279接口芯片为核心,组成工业控制上常见的大数量开关阵列的巡回检测应用系统,文中给出了硬件设计电路和软件实现程序框图;并由此引出了一种大数量扩展中断的实用方法。
The article takes the MCS-8031 and the programmable keyboard / display 8279 interface chip as the core to form a tour detection application system of a large number of switch arrays commonly used in industrial control. The block diagram of the hardware design circuit and the software implementation is given in the article. A pragmatic approach to large numbers of extended interrupts is introduced.