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
A、進(jìn)位位C為1時(shí),程序轉(zhuǎn)至LOOP B、進(jìn)位位C為0時(shí),程序轉(zhuǎn)至LOOP C、A為1時(shí),程序轉(zhuǎn)至LOOP D、A為0時(shí),程序轉(zhuǎn)至LOOP