这是一个实现单摆功能的程序，区别于以前的只能在一条直线上摆动，而是一个和实际单摆大致相同的，在最高点速度最低，最低点速度最大。-This is a realization of the program pendulum function, distinguished only swing in a straight line before, but an actual pendulum roughly the same, at the highest point of the lowest ra

该Labview程序可设置Butterworth滤波器的滤波器类型、最高截止频率、最低截止频率和滤波阶数，通过滤波前后两个示波器窗口波形的对比，可很直观地观察到整体滤波的效果。-Butterworth filter can be set filter type, the highest cut-off frequency, the lowest cut-off frequency and filter order, by comparing the two windows oscilloscop