1602+12 C887+51 clock, accurate time and replace the DS1302 clock chip, high-precision travel time, in error 12US, simple circuit

1602+12c887+51\(NPN管)完整时钟.c
..............\(PNP管)完整时钟.c
..............\1完整时钟.c
..............\2完整时钟.c
..............\3完整时钟.c
..............\4完整时钟.c
..............\ihoD3QtX.jpg
..............\PCB\DS12887液晶时钟.Bkp
..............\...\DS12887液晶时钟.ddb
..............\...\PCB_Project1.PrjPCBStructure
..............\...\PCB_Project1.PrjPCBStructurePreview
..............\...\.roject Logs for PCB_Project1\PCB1 PCB ECO 2010-3-9 22-32-50.LOG
..............\...\.............................\PCB1 PCB ECO 2010-3-9 22-37-18.LOG
..............\...\.............................\Sheet1 SCH ECO 2010-3-9 22-32-37.LOG
..............\带温度.txt
..............\PCB\Project Logs for PCB_Project1
..............\PCB
1602+12c887+51

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