采用C8051f020和S3530A以及12864LCD的时钟显示源程序。尤其是对S3530A的SMBUS中断服务程序，参照别人的程序自己写的，执行效率较高。-Adopt C8051f020 and S3530A 12864LCD of the clock display source. S3530A the SMBUS interrupt service routine, referring to someone else' s program to write their own, t