hadoop-2.7.1-src.tar

syb12864驱动程序，程序为三元晶公司的无字库12864液晶驱动(syb12864Drivers,Program s ternary crystal LCD driver 12864 free fonts)

STM32实现环形缓冲区的串口传输，在KEIL环境下开发，稳定运行。(STM32 ringbuffer USART)

基于430单片机实现的AD9852信号发生器。可以实现键盘输入频率选择，也可实现频率范围内扫频，功能菜单由12864显示(the AD9852 signal productor based on 430 MCU ,the frequency of signal can be controled by 4*4 keyboard .)

freemodbus-v1.5.0无改动官方源码，可移植(Freemodbus-v1.5.0 Portable without changing official source code)

From the principles of electrical engineering it is known that the 3-phase quantities of the 3-phase AC machines can be summarized to complex vectors. These vectors can be represented in Cartesian coordinate systems, which are particularly chosen to suitable render the physical relations of the machines. These are the field-orientated coordinate system for the 3- phase AC drive technology or the grid voltage orientated coordinate system for generator systems. The orientation on a certain vector for modelling and design of the feedback control loops is generally called vector orientation.

Iar环境下avr_bootloader的编写，可以参考参考。(Preparation of Iar under the environment of avr_bootloader, can refer to the reference.)

说明：  使用 AT89C52 单片机开发，功能是1个数据管，显示0 至 9。(Developed with AT89C52 single chip computer, the function is a data tube, displaying 0 to 9.)

关于stm32系列所有芯片挂在总线上的多块MINI板的互相小刘实验。(About the mutual Xiaoliu experiment of several MINI boards on the bus of all the chips of STM32 series.)

这是一个有关AD7689的程序，只有驱动部分，使用的CPU是msp430F149。可以采集8路数据。不过数据在主程序中需要处理下，不然会有波动。(This is a program about the AD7689, only the driving part, CPU use is msp430F149. 8-way data can be collected. However, the data need to be addressed in the main program, the otherwise subject to fluctuations.)

很实用的UPS并机技术讲解，有详细的理论推导，建模和实际调试。(UPS is very useful and machine technology explained, a detailed theoretical analysis, modeling and debugging.)