enigma源码，可以给刚开始学的人学习下。

％ 该Matlab程序基于牛顿－拉夫逊算法，用于计算已知导纳矩阵、PQ节点、PV节点、平衡节点(UA)的电力网络潮流 ％ U - 各节点母线电压 S - 各节点注入功率 S_net - 电力网络总损耗 ％ PQ_P - 实算PQ节点注入有功功率 PQ_Q - 实算PQ节点注入无功功率 ％ delt_PQ_P - 实算PQ节点有功功率修正值 delt_PQ_Q －实算PQ节点无功功率修正值 ％ delt_UA_P - 实平衡节点有功功率修正值 delt_U_2 - 实平衡节点电压平方修正值 ％ delt_PQV - 实算P Q U^2修正值 J - 雅可比矩阵 ％ e - 电压实部 f - 电压虚部 delt_ef - 电压实部与虚部修正值- The Matlab program based on the Newton- Raphson algorithm is used to calculate the admittance matrix is known, PQ node, PV node, the node balance (UA) the trend of the electricity networks U- the node bus voltage S- each node injection power S_net-- The total loss of electric power networks PQ_P- operator PQ is injected into active nodes PQ_Q- operator PQ is injected reactive power node delt_PQ_P- is considered the correct value of active power PQ node delt_PQ_Q- really count PQ node reactive power to amend the value of delt_UA_P- real active power balance of the correct value of the node delt_U_2- node voltage balance is the correct value of the square o

sierpinski common fractals

使用比较方便的一款液晶字符提取软件。适用于任何字符。-More convenient use of a LCD Character extraction software. Apply to any character.

使用delphi编写的运动会编排程序,还需要更加完善!-Delphi prepared to use the Games schedule, but also need to be more perfect!

c语言之存储篇，从基础学起，让你彻底精通c语言的应用。-memory of c language,learn form base,lead you to be well up to application of c language

是一篇关于时频分析的外国论文，内容比较多，是硕士论文，比较难找的，里面有不少方法-Are about a time-frequency analysis of the foreign papers, more content is the Master" s thesis, more difficult to find, and there are many methods

atmel 汇编代码，用于调试实验用，精简实用，适用于初学者-atmel assembly code

labview 声卡配置实例，利用函数选板里提供的函数配置好参数，连线即可-labview examples of the sound card configuration

著名的手机浏览器开源代码-famous phone browser source code

恒流驱动和提 高LED的光学效率是LED 应用设计的两个关键问题，本文首先介绍大功率LED的应用及其恒流驱动方案的选择指南，然后以美国国家半导体(NS)的产品为例，重点讨论如何巧妙应用 LED恒流驱动电路的采样电阻提高大功率LED的效率，并给出大功率LED驱动器设计与散热设计的注意事项。-LED constant current drive and to improve the optical efficiency of LED application design of two key issues, this paper describes the application of high-power LED constant current driver and the choice of the program guide, and then the United States National Semiconductor (NS) products, for example, focus on how skillful application of LED constant current driver circuit of the sampling resistor to improve the efficiency of high-power LED, and gives high-power LED driver design and thermal design considerations.