数字时钟显示，LCD1602显示日期，时间，包括电路图及运行程序-Digital clock display, LCD1602 display the date, time, including circuit diagrams and run the program

LCD1602显示 模块化写法 可让你玩转1602显示器、并学会模块化写法-LCD1602 display modular method can let you play 1602 displays, and learn to modular way