duandianshizhong

gov information agency is a web application for interacting with the government departments

说明：  惠普打印机 PCL5 语言 命令函数程序代码参考(hp pcl5 printing command reference)

国际电气工程先进技术译丛 电力变流器电路 本书揭示了整流、逆变、周波变流和变流电路的所有关键组分——描述其通断，电压和电流的关系，还有变流器的性质、运行、控制和性能及其实际应用。书中的许多方法基于经典数学，同时包含了大量有解的数字例题。本书主要介绍了单相和三相AC-DC整流器电路，功率因数和谐波性能，不同的DC-AC逆变器电路，PWM调制器和相位可控矩阵AC-AC周波变流器电路，降压、升压和降升压DC-DC变流器电路，以及用于DC-DC电路的开关模式变流器电源(International Electrical Engineering advanced technology on power converter circuit This book reveals all the key components of the rectifier, inverter, Zhou Bo converter and converter circuit, which describes the relationship between the current and voltage, current and voltage, as well as the nature, operation, control and performance of the converter and its application. Many methods in the book based on classical mathematics, also contains a large number of digital solutions for example. This book mainly introduces the single-phase and three-phase AC-DC rectifier circuit, power factor and harmonic performance, different DC-AC inverter circuit, PWM modulator and phase controllable matrix AC-AC frequency converter circuit, buck, boost and drop boost DC-DC converter circuit, and for the DC-DC circuit switch mode converter power supply)

基于K60芯片的线性CCD循迹小车，分为速度环和方向环(Linear CCD Track Car Based on K60 Chip)

基于MSP430单片机下的GSM模块开发源代码(MSP430 microcontroller development under the GSM)

oled驱动程序，中文字库，iic通信，四线接口彩屏(qudongdwfjowqjfowejfwejfweofw)

这是一种火灾报警控制器的源代码，用51汇编写的(This is a fire alarm controller s source code, with 51 written compilation)

说明：  由于超声波指向性强，能量消耗缓慢，在介质中传播的距离较远，因而超声波经常用于距离的测量，如测距仪和物位测量仪等都可以通过超声波来实现。利用超声波检测往往比较迅速、方便、计算简单、易于做到实时控制，并且在测量精度方面能达到工业实用的要求，因此在移动机器人研制上也得到了广泛的应用。(Because of its strong directivity, slow energy consumption and long propagation distance in the medium, ultrasound is often used for distance measurement, such as range finder and level gauge, which can be achieved by ultrasound. Ultrasound detection is often fast, convenient, simple in calculation, easy to achieve real-time control, and can meet the requirements of industrial application in measurement accuracy, so it has been widely used in the development of mobile robots.)

STM32红外发射源码，帮助新手学习，理解简单实用(STM32 infrared emission source, help novices learn to understand simple and practical)

Cube配置，IAR编写代码，实现4*4矩阵键盘模块的功能(Cube Configuration, IAR Coding, Implementing 4*4 Matrix Keyboard Module Function)