一个用8051单片机开发的程序，是带闹钟的数字时钟，含有原理图-8051 with the development of a procedure for the digital clock with alarm, containing schematic

《单片机C语言程序设计实训100例——基于8051+Proteus仿真》案例压缩包 第 03 篇 综合设计 15 高仿真数码管电子钟-" Microcontroller C Programming Language Training 100 cases- based on 8051+ Proteus simulation," Case No. 03 archive 15 highly integrated design simulation of digital electro