A、DPTR中數(shù)加1 B、DPTR中數(shù)減1 C、DPTR作間接地址中數(shù)減1 D、DPTR作間接地址中數(shù)加1
A、R0寄存器中數(shù)減1 B、R0寄存器中數(shù)加1 C、R0作間接地址中數(shù)減1 D、R0作間接地址中數(shù)加1
A、P1口為低電平時(shí),程序轉(zhuǎn)至LOOP B、P1口為高電平時(shí),程序轉(zhuǎn)至LOOP C、P1.1口為高電平時(shí),程序轉(zhuǎn)至LOOP D、P1.1口為低電平時(shí),程序轉(zhuǎn)至LOOP