用51单片机控制超声波，采用中断方式，用于小车的蔽障，超声波的距离在一米左右,51 single-chip control with ultrasound, using interrupt mode, the cover for the vehicle barrier, ultrasonic distance meters in a

The frequency domain plays an important role in image processing to smooth, enhance, and detect edges of images. Although image data typically does not include imaginary values, the fast Fourier transform (FFT) has been used for obtaining spect

很实用的一个超声波测距程序，适合大多数人的需要-A very practical location Ultrasound procedures, suitable for the needs of most people! ! !