• 2022-10-28
    MCS-51单片机复位后,程序计数器PC、 堆栈指针SP、端口寄存器P0 -P3、 数据指针DPTR分别为:
    A: 0000H,00H,00H,0000H
    B: xxxxH,xxH,xxH,xxxxH
    C: 0000H,07H,00H,0000H
    D: 0000H,07H,FFH,0000H