bi_wireless_power_transfer

说明：  声音信号短时傅里叶变换MATLAB程序，可得到短时傅里叶变换的图像(Short-time Fourier Transform (STFT) of sound signal can be obtained by MATLAB program.)

matlab编程的BP神经网络以及用遗传算法改进的BP神经网络(BP neural network programmed by MATLAB and BP neural network improved by genetic algorithm)

VB打字练习软件-键上飞打字王完整源码，界面虽然简洁，但已经充分表现了功能。练习指法相当有用。打字的同时显示打出字符总量、正确率、所有时间等。

提供了一个很好的工具给广大航海人帮助，了解国际航海规则-Provides a good navigational tools to the broad masses of people to help, understanding of international navigation rules

it is useless, i am sorry

这是我大一的时候做的sin(x)源程序,库函数的实现-This my freshman year when do sin (x) source, the realization of library functions

for wince freescalei.mx21 usb on to go driver

1.本文对一种高效的升压式PWM 变换电路作了分析研究 对开关状态的切换效率高 采用双零软开关工作，大大降低了开关损耗, 提 高了电路的转换效率. 2.该电路在高频的开关电源、逆变器等电力电子电路上有很大的实用价值, 可以提高电路的转换效率. -1. In this paper, an efficient step-up PWM conversion circuit analysis study on the switch to switch the state of high efficiency soft-switching double-zero work, greatly reduces switching losses, improve the conversion efficiency of the circuit .2. The circuit in high-frequency switching power supplies, inverters and other power electronic circuits have great practical value, can improve the circuit

MPC860T (Rev. D) Fast Ethernet Controller Supplement

说明：  基于高频注入电压信号的永磁同步电机测速矢量双闭环控制(Speed Measurement Vector Double Closed Loop Control of Permanent Magnet Synchronous Motor Based on High Frequency Injection Voltage Signal)