The structure,external circuit and working principle of real time clock chip X1203 are introduced.The applications of low_cost timing controller which consists of single chip computer and X1203,in billboard system and door_prohibiting system are illustrat
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李昔华,王益贤.串行实时时钟芯片X1203及其应用[J].重庆工商大学学报(自然科学版),2000,(4): LI Xi_hua, WANG Yi_xian . The Serial Real Time Clock Chip X1203 and its Application[J]. Journal of Chongqing Technology and Business University(Natural Science Edition),2000,(4):