利用单片机实现的控制电梯系统，参考2004年湖北省大学生电子设计竞赛原题设计。

C51实用源码，极具参考价值！-practical source of C51, great reference value!

这个是完红外线PT2261的源码，绝对的好用，不要改动。是的中断做的阿-This is the End of the PT2261 infrared source, the absolute ease of use, do not change. To do is interrupt the Arab-Israeli

工业控制源程序！采用STEP 7 编制！涉及到PROFIBUS-DP组太！-Industrial control source! Prepared using STEP 7! Related to PROFIBUS-DP group too!

利用yc7c68013实现了模数和数模传输，经测试，在keilc51中能通过-Yc7c68013 achieved using D and D transmission, have been tested in China and through keilc51

视觉暂留，编程从一个I/O口输出一扫频信号，驱动一支LED灯闪动，频率范围为10HZ~99HZ，扫描时间为30秒，在LED闪动期间观察，一旦发现无法识别LED灯闪动时，按下按键K1，立即停止输出，并将此时的信号频率显示在数码管上，该信号的周期为测试者的视觉暂留时间。-Persistence of vision, programming from an I/O port outputs a sweep signal to drive an LED light flashing, the frequency range of 10HZ ~ 99HZ, scan time of 30 seconds, the LED flashing during the observation, once found it impossible to identify the LED lights flashing, press the key K1, immediate cessation of the output, and at this time the signal frequency displayed on the digital control on the test cycle of the signal" s persistence of vision time.

C到ASM，ASM到C到Keil C

• 直接PWM 输出控制马达转速 • PWM 频率可达31kHz • 三种输入型态控制转速：PWM 输入，VR 输入以及热敏电阻输入 • 操作电压：12VDC • 过电流保护 • 霍尔采集器输出控制转速反馈 • 马达转子锁定保护 • 马达转速可调-err

教你怎样使用电子仿真软件：PROTEUS及单片机各种仿真实例！-Teach you how to use electronic simulation software: PROTEUS and microcontrollers of various simulation examples!

基于ARM7的GPRS实验代码(LCD320,键盘,I2C总线)-ARM7-based GPRS experimental code (LCD320, keyboard, I2C Bus)

linux系统下的源代码,用C++语言编写的温度控制系统-linux system source code, C language prepared by the temperature control system