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使用51单片机连接BH1750光照传感器与ds18b20温度传感器，对光照、温度进行采集，通过串口打印出来(The BH1750 light sensor and DS18B20 temperature sensor are connected by 51 single chip computer. The light and temperature are collected and printed through serial port.)

erads最新破解软件2016版,亲测有用(very good)

电动汽车电气部分充放电系统的平均模型仿真程序。将开关系统转化为纯电路系统以便于分析和计算。(Simulink program for the average equivalent model of charging/re-charging part in electic vehicles. The DC-DC-AC system is modeled as a cuicuit without any swiches.)

PLC图形化编程系统的研究与实现 东南大学 硕士学位论文 PLC图形化编程系统的研究与实现 姓名：保慧 申请学位级别：硕士 专业：机械电子工程 指导教师：毛玉良(Research and Implementation of PLC graphical programming system Southeast University Master thesis Research and Implementation of PLC graphical programming system Name: Bao Hui Application Degree: Masters Major: Mechanical and Electronic Engineering Instructor: Mao Yuliang)

说明：  基于STC12C5A60S2的流星灯程序(meteor lights program based STC12C5A60S2 microcontroller )

实现小波算法，FFT以及滤波器,以及许多数学计算常用函数(this file complete wave,fft,filter and math function)

该防盗系统使用热释电红外传感器作为人体探测模块，并将防盗系统设计为两个用户可选择的模式：在家模式和离家模式，当处于在家模式时，如果传感器检测到有人进入监控范围，则自动响起门铃提醒用户有访客，就不会发生误把访客当作盗贼的报警事件了；当处于离家模式时，如果传感器检测到有人进入检测范围，则开启声光报警模块进行报警。同时，该系统为密码控制系统，用户通过输入正确密码才可改变模式和解除警报，这也增强了该系统使用的可靠性。(The anti-theft system using pyroelectric infrared sensor as the detection module, and alarm system design for the two user selectable mode: home mode and home mode, when in the home mode, if the sensor detects a person into the monitoring range, will automatically alert the user to a visitor rang the doorbell, will not happen take the visitor as an alarm event of thieves; when in the home mode, if the sensor detects a person into the detection range, open alarm alarm module. At the same time, the system is a password control system that allows users to change their mode and lift their alarms by typing in the correct password, which increases the reliability of the system.)

ATSHA204 主要特性： 1，SHA-256 Hash算法 2，有保证的唯一的72-bit序列号； DS28CN01　６４－ｂｉｔ 不仅有软件加密，内部还有高质量硬件加密。 3，16个槽口的4kbits EEPROM： 4Kbits / 8 = 512Bytes 每个槽口32bytes 4，I2C接口, 单线接口 5, 和Atmel AT88SA102S，AT88SA10HS 6, i2c 地址默认为0xc8； 还可以configuration zone改变地址。(CryptoAuthentication Device Family Atmel offers the industry s widest selection of hardware authentication and encryption devices. The portfolio is currently comprised of three parts with several others under development. Our CryptoAuthentication devices provide confirmation that hardware and software products are real, which is what authentication is all about. The devices are extremely cost-effective and come in exceptionally small packages.)

给初学89c51朋友一个蜂鸣器奏乐(生日快乐)的程序(For beginner 89 c51 friend a buzzer playing music (happy birthday) program)

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