基于At89S52的异步电动机软启动器硬件设计。
Hardware design of soft starter (2017-05-01, WORD, 567KB, 下载12次)
该抢答器主要运用到了编码器，译码器和锁存器：它采用74LS148来实现抢答器的选号，采用74LS279芯片实现对号码的锁存，采用74LS192实现十进制的减法计数，采用555芯片产生秒脉冲信号来共同实现倒计时功能，采用74LS121单稳态芯片来实现报警信号的输出。
The buzzer is mainly applied to the encoder, decoder and latch: it USES 74 ls148 to achieve responder pick, the number is realized by using 74 ls279 chip latches, decimal subtraction is realized by using 74 ls192 counter, using 555 chip to produce second pulse signal to realize the countdown function, using 74 ls121 monostable chip to realize the alarm signal output. (2015-05-13, WORD, 25353KB, 下载2次)
主要介绍电化学传感器的使用方法，简单实用赶快下载吧！
Describes the use of electrochemical sensors, simple and practical to download it! (2014-06-17, WORD, 1334KB, 下载12次)
红外遥控协议，RC5和NEC的。英文的，做遥控器的可以参考。
IR Protocol，RC5 and NEC.You can refer when design the IR Devices. (2014-06-01, WORD, 24KB, 下载16次)
对于交流电磁接触器的各种分类以及电磁接触器的选型参数的各种意义，便于对电磁接触器的选型
For the various meanings of the various AC electromagnetic contactor' s electromagnetic exposure classification and selection parameters, to facilitate the selection of the electromagnetic contactor. (2014-05-26, WORD, 4KB, 下载4次)
（1）应答器采用两节1.5V 五号电池供电，阅读器用外接单电源供电，二者都工作于“写”状态。阅读器通过无线方式向应答器写入任选的三个汉字。采用键盘输入，并由显示屏显示写入汉字，阅读器具有改写和删除写入汉字的功能。耦合线圈间距D≥3cm，写入时间≤5s。显示汉字错误率不大于十分之一。
（2）应答器和阅读器都工作于“读”状态。阅读器通过无线方式正确识别并显示应答器预置的汉字，即实现反向传输。其他条件同（1）。
（3）应答器用自己的擦除功能实现对预置汉字信息擦除后，阅读器的阅读显示屏不应有汉字显示。
(1) transponder uses two 1.5V AA batteries, Reading Used single external power supply, both of which work in the "write" state. The reader optionally three characters written to the transponder by radio. Using keyboard input, written by the display of Chinese characters, the reader has to rewrite and delete functions written characters. Coupling coil spacing D ≥ 3cm, write time ≤ 5s. Display Chinese characters error rate no greater than one tenth.
(2) transponders and readers are working in the "read" status. Reader and display correctly identify the transponder wirelessly preset characters, i.e. to achieve the reverse transmission. Other conditions are the same (1).
(3) Used for their response functions to achieve the preset characters erase information erased, the reader should not have to read screen display of Chinese characters. (2014-05-18, WORD, 10KB, 下载1次)
速度传感器的毕业设计，供大家参考学习和参考借鉴。
Speed sensor graduate design reference for learning and reference reference. (2014-01-08, WORD, 159KB, 下载3次)
无线热点构建，OpenWRT路由器系统配置方案，类似于电信ChinaNET，或者移动CMCC，可以自由配置页面。
wifiap_configuration_openWRT
Wireless hotspot build, OpenWRT router system configuration scheme, similar to the telecommunications ChinaNET, or move CMCC, free configuration page. (2013-08-21, WORD, 500KB, 下载32次)
32位单片机SIM3xxx、温湿度传感器SI7xxx、数字隔离器Si8xxx等资料
32-bit microcontroller SIM3xxx, temperature and humidity sensors SI7xxx, digital isolators Si8xxx etc. (2013-06-30, WORD, 4291KB, 下载4次)
PMSM电流环控制器，使用串联解耦方式设计偏差解耦控制器
PMSM current controller (2013-01-04, WORD, 997KB, 下载50次)
51单片机 特殊功能寄存器 SBUF使用方法,51单片机波特率选择
51 single-chip special function register SBUF, 51 single-chip baud rate selection (2012-05-21, WORD, 65KB, 下载8次)
数字温湿度传感器,DHT21数字温湿度传感器是一款含有已校准数字信号输出的温湿度复合传感器.
Digital temperature and humidity sensors, DHT21 digital temperature and humidity sensor is a digital signal output with a calibrated temperature and humidity combined sensor. (2011-02-01, WORD, 1057KB, 下载57次)
基于数字电路的出租车计价器的设计。包含电路图，论文。
Digital circuits based on the design of taxi meter. Includes schematics, paper. (2010-06-01, WORD, 610KB, 下载30次)
本文介绍了住宅智能化中的防盗防火报警系统。智能化住宅防盗防火报警系统集防盗防火功能于一体，可实现自动检测与自动电话拨号报警。自动检测是指由红外探测与微波探测器构成的双鉴探测器实现盗情检测，同时由温度探测器、光电感烟探测器和一氧化碳探测器集为一体的复合式火灾探测器完成火情检测。多传感器的应用实现了低误报率，增强了系统可靠性。自动电话拨号报警是指通过电话网络自动向相关部门发出语音求救信号。当防盗、防火探测器检测到险情的时候，向单片机发出中断申请，再由单片机控制电话接口电路，实现模拟摘机，根据险情类别，自动拨打相关部门的电话号码如小区管理中心电话。
The System is made up of MCU and GSM Modem. It will display the alarm content in Chinese directly at your mobile screen, and it recurs to the most reliable GSM mobile network. The system adopted initiative infrared sensor to detect, and it turned the traditional alarm net and alarm windows to immateriality. Besides, the system equipped the smog sensor and leakiness sensor of gas and guarded against fire and gas leakiness. (2010-05-19, WORD, 9154KB, 下载144次)
变压器防盗报警系统，无线监测报警主机安装在被监控电力线的电杆上或变压器旁，电力线或变压器一旦被盗、三相断线或停电，监测报警主机立即探知并以无线GSM短信息和语音方式向GSM接收主机报警,接收主机收到报警信号后将数据传送给微机，微机经接警软件分析判断报警主机及可能出现故障的线路后声音报警，屏幕显示报警日期、时间、报警分机号、故障变压器及可能的故障线路，并以电子地图方式显示报警变压器及故障线路的实际地点，将报警数据存入数据库以备查询。值班领导得到报警后立即派警力到现场查验情况，处理有关问题。
Transformer Alarm System (2010-04-27, WORD, 420KB, 下载18次)
设计一个利用电涡流式传感器检测厚度的系统，即以厚度为变量，最后用数码管将结果输出。
The design of a sensor using eddy current detection of the thickness of the system, that is, to a thickness of variables, the final results with a digital control output. (2009-07-04, WORD, 362KB, 下载54次)
LC72131 PLL AM/FM收音控制器
处理器类型：C51
LC72131 PLL AM/FM radio controller processor types: C51 (2008-02-24, WORD, 6KB, 下载118次)
利用带CAN控制器的高性能8位单片机80C592,研制了能同时接受8路不同 测温元件输入的带现场总线接口的新型智能温度变送器,并对该变送器的软硬件组成和使 (2007-08-31, WORD, 40KB, 下载19次)
http://www.pudn.com/Download/item/id/326153.html
C51常用子程序(下载后压缩,用word打开,复制到51编译器中编译!!)
C51 common subroutine (download compressed using word opened, copied to 51 Compiler Compiler! !) (2006-02-22, WORD, 8KB, 下载7次)
是基于SC51单片机开发，详细介绍了单片机仿真器的开发的过程。
SC51 microcontroller is based on the development of SCM detailed simulation of the development process. (2005-11-21, WORD, 229KB, 下载139次)