实验板K1按键是模式选择按键 实验板K2按键是时间减 实验板K3按键是时间加 完整的1302时钟加1602液晶显示的程序,已经调通,项目文件,下到单片机里就可运行-Experimental board K1 Mode key is a key test of time by key board K2 K3 key test plate is full time plus 1602 1302 plus LCD clock pr

STM32驱动的DS1340实时时钟的底层驱动程序，已经调通下载后可直接可以使用，需要的朋友可以下载-STM32-driven real-time clock DS1340 low-level drivers, already available for download through after the transfer can be used directly, need friends can download

141-定时做普通时钟可调(141- clock can be adjusted as ordinary clock)