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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。-good, we all hope to see, on the RS-485 and the knowledge of the serial port.

软件工程中很重要的一环，本书主要介绍了测试的管理方法。-Software engineering is very important, this book introduces test management.

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The purpose of this document is to present how to use the Timer for the generation of a PWM signal tunable in frequency and duty cycle. As an application example, this document is based on a basic “music” synthesizer through an external buzzer. Example code is also available in the it.-The purpose of this document is to present how to use the Timer for the generation of a PWM signal tunable in frequency and duty cycle. As an application example, this document is based on a basic

基于粒子群算法求解二维不规则零件排样问题的方法-Based on Particle Swarm Algorithm for two-dimensional irregular parts nesting problems

2008年全国大学生建模大赛题目b 2008年全国大学生建模大赛题目b-2008 National Collegiate Championship Title b2008 Modeling Students Modeling Contest National Title b

用windows画笔生成BMP文件f(x,y),图象宽为W，高为H，编写程序读取BMP文件，并生成新的图象g(x,y)。以BMP文件格式输出该图象。-Windows paintbrush used to generate BMP file f (x, y), image width W, height H, the preparation process to read BMP files, and generate new images g (x, y). BMP file format to the output of the image.

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java+jsp+mysql，B/S结构，内置日志记录系统，使用事务保证数据完整性，组件化开发-This system is constructed with the principle of modularity, developed with java+jsp+mysql, under structure of B/S, meanwhile has the log recording system inside and uses transactions to ensure the integrality of data.

File in order to update SIM300S of SIMCOM