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利用74LS148与8051单片机的外中断源输入端(?)和(?)相连,将外中断源扩展为16级,并实现16级中断嵌套的方法。
74LS148 and 8051 microcontroller using external interrupt source input (?) And (?) Connected to the external interrupt source expanded to 16, and 16 interrupt nesting method.