基于51单片机的简单打字机源程序，完全自主开发，首创51单片机打字机。-Based on 51 single-chip the simple typewriter source of, completely independent development, the first 51 microcontroller typewriter.

这一个是一个基于51单片机的数码管开发程序，里面的程序标识明确，可以让初学者没有障碍地看懂数码管动态显示-This one is a 51 microcontroller-based digital development program, which the program identifies clear, so that beginners can understand there are no obstacles to digital tube dynamic display