A.13位計(jì)數(shù)結(jié)構(gòu)B.8位計(jì)數(shù)器結(jié)構(gòu)C.2個(gè)8位計(jì)數(shù)器結(jié)構(gòu)D.16位計(jì)數(shù)結(jié)構(gòu)
A.interrupt B.unsigned C.using D.reentrant
A.高電平 B.低電平 C.脈沖 D.下降沿