电动读卡器IC卡SI4442读写模块源代码

转载!希望大家喜欢.主要是介绍用C编的C51的延时程序.-reproduced! Hope you like them. Mainly introduces C51 C series of procedural delay.

LCD显示和单片机中断定时,单片机不断中断，通过中断计时，当一秒时间到，调用显示函数在LCD上显示时间 -LCD display and single-chip timer interrupt, microcontroller constantly interrupted by interruption of time, when the second time that call functions in the LCD display to show time

PCB设计经验,实际应用中的经验和技巧,非常难得.-PCB design experience, the practical application of the experience and skill, very rare.

说明：此程序使用标准PS2键盘输入，LCD1602液晶屏输出显示。此样例仅作测试使用 晶振使用12M或者11.0592M,本键盘使用部分字母和数字测试，其他按键不能使用，用 户可以自行扩展。由于开发板和程序的各种参数，程序中没有使用奇偶校验，不保证没有 误码,校验程序请自行添加。-Description: This program uses the standard PS2 keyboard input, LCD1602 LCD output display. This sample is only used for testing the use of crystal 12M or 11.0592M, this keyboard to use part of letters and numbers tests, other buttons can not be used, users can expand their own. As the development board and procedures for various parameters, the program does not use parity, does not guarantee that there is no error, verification procedures to add your own.

本书详细介绍了KEIL C51编译器的使用，是学习单片机的好书。-The book detailed the KEIL C51 compiler use, is to learn from books SCM.

利用51系列单片机实现四种波形，正弦波、方拨、阶梯波、三角波，采用开关电路实现四种波形转换、放大电路实现波形幅度可调。通过编程实现仿真。-51 Series MCU realize the use of four types of waveforms, sine, square dial, ladder wave, triangle wave, the use of switching circuits to achieve the four waveform conversion, amplifier circuit realize adjustable waveform amplitude. Through the realization of simulation programming.

数字温度计设计任务书,详细的代码，详细的电路图，试验通过，可直接运行，硬件采用89S51单片机，18B20温度传感器-Digital thermometer design task book, the detailed code, a detailed circuit diagram, test passed, can be directly run, the hardware used 89S51 Singlechip, 18B20 temperature sensor

SST39x160 FLASH芯片读写函数，已经在实际项目中应用-FLASH read/write

单片机下的ADC0809驱动程序-the ADC0809 SCM Driver

利用单片机演奏音乐的程序-SCM procedures performed music