ds1302_uart

代码说明：

  本程序采用kiel开发，使用DS1302作为时钟源，八位数码管进行动态扫描显示时间，并可以由上位机发送“R/r”（read）命令由单片机发送时间和日期信息到上位机(The program uses kiel development, use DS1302 as the clock source, eight digital tube dynamic scan display time, and can be sent from the host computer " R/r" (read) command from the microcontroller to send the time and date information to the host computer)