avr单片机开发EEPROM读写实验源程序

这是单片机MS-51双字节带符号数除法扩展子程序-This MS-51 with two-bit symbols divider expansion subroutine! !

控制步进电机正转，如：p3.2正转,p3.3反转,p3.4停止 步进电机接p1.0p1.1p1.2p1.3，正转，反转各3圈，正反快慢功能，是步进机的经典程序。-Stepper motor control is transferred, such as: p3.2 is transferred, p3.3 inversion, p3.4 stop stepper motor then p1.0p1.1p1.2p1.3, is turn, reversal of the 3 lap, both positive and negative speed function, is a classic step process machine.

一个75HZ铃流实时检测程序，灵敏度很高，可以用于电话来电铃流检测。-a 75HZ bell flow real-time detection procedures, high sensitivity, can be used for phone calls Chu flow detection.

亲测：基于51单片机的八路抢答器，与其他同类源码比，功能强大，有查询，设置，抢答，答题等所有实用功能。-Pro-test: Based on 51 single-chip eight-way of the Answer, and with other source than the powerful, a query, settings, Answer, answer all practical function.

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.

监控矩阵系统视频字符叠加,128路视频输入/32路视频输出.-Surveillance video characters superimposed matrix system, 128 video input/video output 32.

AVR--充电器 .-AVR chargers.

LCD液晶屏显示程序，如何简单有效的将LCD液晶屏驱动显示我们所需要的字符。-LCD liquid crystal screen display program, how simple and effective LCD LCD screen will show that we needed to drive the characters.

通过小磁片对霍尔传感器所产生的电平变化进行记数的C程序~-Hall sensors through the small disk on the level generated by changes in procedures for counting of C ~

C51 七种实用子程序集 1-C51 seven practical subroutine sets a practical subroutine sets