某公司安装了电子门，要设计门禁系统： 公司的雇员可以凭借密码、胸卡或指纹进入公司 计算机根据雇员的验证方式对其身份进行验证 管理员在监控室可以通过...

文章借助系统模型，阐明了GSM模块收发短信的基本概念以及串口控制SMS的基本原理。详细介绍了单片机控制GSM模块工作的软件实现过程，对对怎样用单片机控制GSM模块收发短信进行了探讨，也对程序设计的主体思想作了较为细致的分析。-article with the system model, a GSM transceiver module SMS the basic concepts and serial control of the basic tenets of SMS. Details of the MCU control of the GSM module software process of how to use SCM control GSM transceiver module for the SMS study and design of the main procedures were thinking more detailed analysis.

05年大学生电子设计竞赛试题《悬挂运动物体》程序-05 Undergraduate Electronic Design Contest questions "campaign flags object" procedure

随着精准农业的发展，农业种植和农业研究人员需要一种手持式NDVI测量仪，以便对农作物长势进行定量测量。本文讨论了一种手持式NDVI测量仪的完整设计过程，详细论述了设计原理，并给出了详尽的单片机程序、设计电路原理图及PCB图。该NDVI测量仪采用太阳光作为光源，光电探测器采用滤光片和光敏二极管实现，用AT89C51单片机控制。其具有结构简单、成本低、轻便、低功耗的特点。-With the development of precision agriculture and farming, and agricultural researchers need a handheld NDVI measuring instrument, in order to crop growth for quantitative measurement. This paper discusses a handheld meter NDVI the integrity of the design process, discussed in detail the design principles, and gives a detailed SCM procedures, circuit schematics and PCB plans. The NDVI measuring instrument used sunlight as a light source, photodetector using filters and photodiode realized, with AT89C51 control. Its structure is simple, low cost, lightweight, low-power characteristics.

开发usb块传输的固件程序,可pc循环向下微机发数据-development usb block transmission firmware procedures, pc downward cycle of the computer data

C51单片机通过红外通信实现PC键盘的无线通信 读取与显示具体细节请参考源程序将时钟线接入外部中断数据线接入普通I/O输入输出口-C51 microcontroller through infrared communications PC wireless keyboard and display read details please refer to the source clock line access external interrupt data lines access I/O input and output mouth

LT-1B msp430开发板例子程序－ADC12_08

凌阳IDE中写的一个交通灯控制程序，改一下自己的IO代码 直接编译就可以使用了-Sunplus IDE write a traffic light control procedures, to your own direct IO code compiler can use the

DSP2812 控制CY7C68001的源码,有详细的注释-DSP2812 control CY7C68001 source, there are detailed notes

SPI接口型E2PROM内部存储器的组织及读.写控制方法.-SPI Interface-type E2PROM internal memory of the organization and read. Write control methods.

拉幕式数码显示技术，有详细的电路图以及C的程序-La-screen digital display technology, a detailed circuit diagram and the procedure C