基于单片机并行口的电子钟的设计,多功能电子表原理框图、原理图、PCB图及程序-Microcontroller-based parallel port electronic clock design, multi-function electronic watch block diagram, schematic, PCB plans and procedures

6位电子钟单片机驱动程序可实现闹钟 计数 秒表 等功能(The 6 bit electronic clock MCU driver can realize the alarm clock counting stopwatch and so on)