利用pic16f877设计电子闹钟，具备基本时间显示、闹钟功能，添加秒表功能、懒虫模式，附实验报告 工程编译环境：MPLAB-Pic16f877 design electronic alarm clock, with the basic time display, alarm function, add a stopwatch function, slacker mode, with experimental reports Project build environment: the