MATLAB implementation of SPIHT (without Arithmatic coding stage). ％ Performance evaluation : this toolbox VS. SPIHT ％ Test image: lena512.raw ％ bpp SPIHT(dB) This code(dB) ％ 0.1000 29.8107 29.3202 ％ 0.2000 32.7202 32.2514 ％ 0.3000 34.5

很好地，希望大家都来看看，关于RS－485方面的知识和串口方面的。

很好地，希望大家都来看看，关于RS－485方面的知识和串口方面的。以及一些实用软件-good, we all hope to see, on the RS-485 and the knowledge of the serial port. And some utility software

在要求通信距离为几十米到上千米时，广泛采用RS-485串行总线标准。RS-485采用平衡发送和差分接收，因此具有抑制共模干扰的能力。-Requiring communication distance of tens of meters to 1000 meters, it is widely used RS-485 serial bus standard. RS-485 balanced differential transmit and receive, so it has the abili