测量通过计算机的话筒所采集的声音数据，虚拟示波器的面板能够自动测量输入信号的周期、频率和幅度。

实现了对摄像头的视频采集、截图、录像基本功能，并且能实现对摄像头的各种控制，如随时停止和开始，及摄像头驱动层提供的控制面板.-Realized with camera video acquisition, capture, video basic functions, and can realize the various control of the camera, such as at any time to stop and start, and camera driver layer p