4按键输入、8段led数码管显示（包括小数点）。led显示采用动态扫描的方式。-Four key inputs, 8 digital tube led display (including the decimal point). led display dynamic scan approach.

光学设计：半导体激光器动态特性计算，LED电流—电压特性曲线仿真，高斯光束透镜变换特性的分析，光波在介质面上反射折射仿真计算，平行平面腔模的迭代解法-Optical Design: semiconductor laser dynamics calculations, LED current- voltage characteristics simulation, transformation properties of Gaussian beam analysis of the lens, li

主要是利用matlab软件编写的一个Led动态显示屏的源代码，可以修改代码，换字符- Mainly using the matlab software to write an Led dynamic display source code , can modify the code , in characters