cbiancheng xu, danpianjikongzhi

一个红外接收的程序，对红外遥控的设计具有一定的参考价值-An infrared receiver of the procedures, the design of infrared remote control has a certain reference value for

这是由C51单片机实现的接触式IC卡的读写-This is achieved by the C51 single-chip contactless IC card read-write

为Visual borland c builder实现Vision2 DLL

本设计主要是运用单片机设计一个最小系统――电子时钟，它具有24小时计时功能，能够对时间进行调整，并且能实现时、分、秒的显示，同时还有内设闹钟，时间到时候会响铃，响铃时可以通过按键控制延时再启动或关断。与此同时还设置了整点报时功能；并采用采用了软件去抖的方法扫描键盘，动态刷新显示数码管，并通过查表实现译码输出时间等编程方法；-This design is the use of single-chip design of a minimum system- Electronic clock, it has a 24-hour timer function, capable of time to adjust, and can achieve the hours, minutes and seconds display, but also equipped with alarm clocks, time to When ringing the bell to ring when the button control can delay re-start or shutdown. At the same time also set up the whole point timekeeping function and adopt the use of the software to scan the keyboard shaking method, dynamic refresh display digital tube, and through the realization of decoding look-up table output time programming method

利用脉冲控制伺服电机运转，伺服电机频率通过改变定时器初值来控制-The use of pulsed operation of servo motor control, servo motors by changing the timer frequency to control the initial value

C51编写的用ＩＯ脚模拟串口的源程序,供初学者参考-C51 prepared by serial IO pin analog source, the reference for beginners

/************************** 0 1 2 3 4 5 6 7 8 9 . CLR + - = CLR ***************************/ 用键盘扫描,数码管显示实现计算功能,能实现xxx.x任意正数的加减 运算,超过范围显0000,功能键如上-/************************** 0 1 2 3 4 5 6 7 8 9. CLR +- = CLR ***************************/ With keyboard scan, digital tube display of computing power, to achieve any positive xxx.x addition and subtraction Operation, significantly more than the scope of 0000, above function keys

知识问答器。可以任意选取一套题目作答，服务返回答题统计结果。-Knowledge Q

vb做得自动报警系统，可以设置传输率，做到实时监测-vb doing automatic alarm system, you can set a transmission rate, to achieve real-time monitoring

本程序主要是51单片机的应用和dac1230的接口应用-This procedure is the application of single-chip microcomputer 51 and the interface application dac1230