有关74hc080的一些相关资料，希望可以帮助大家，它多用于IC卡读取了！...

简易电子琴的设计 一、 设计题目： 设计一简易电子琴，要求能够发出1、2、3、4、5、6、7等七个音符。 使用元件：AT89C51、LM324，喇叭，按键等 二、 设计目的 （1）能够对电子电路、电子元器件、印制电路板等方面的知识有进一步的认识，独立对其进行测试与检查。 （2）熟悉8051单片机的内部结构和功能，合理使用其内部寄存器，能够完成相关软件编程设计工作。 （3）为实现预期功能，能够对系统进行快速的调试，并能够对出现的功能故障进行分析，及时修改相关软硬件。 （4）对软件编程、排错调试、焊接技术、相关仪器设备的使用技能等方面得到较全面的锻炼和提高。-simple design of a flower, a design : a simple flower design, request, sent seven notes. Use Element : AT89C51, LM324, speakers, such as two keys, designed (a) to be able to electronic circuits, electronic components, such as printed circuit boards with the knowledge to further understanding of its independent testing and inspection. (2) familiar with the 8051"s internal structure and function and the rational use of its internal registers can be completed software programming design work. (3) To achieve the desired functionality, the system can quickly debugging, and the right to function failure analysis, the timely revision of the related hardware and software. (4) The right software programming, debugg

18B20在msp430下的应用 没有错误，运行相当完好 且兼备简洁易用的优点-18B20 in MSP430 applications under the error-free, running very well and the advantages of both simple and easy-to-use

VC++下的单片机通信程序，图形应用窗口，方便操作与使用-VC++ Under the single-chip communication procedures, window graphics applications, easy operation and use of

采用实时芯片DS1302来计时,并用LCM液晶显示!有较高的精确度!-Real-time chip DS1302 to time, and LCD LCM! Have higher accuracy!

C8051F06X单片机编程，DAC模块代码-C8051F06X Microcontroller Programmer, DAC module code

LA1823+LC72131收音机子程序.-LA1823+ LC72131 Radio subroutine.

用51引脚模拟SPI，进行ad7706读写操作。-the source code which use 51 MCU read and write ad7706

单片机最小系统，两位LED数码管由串口输出接两个164驱动，Lout,Rout为左右声道输出，SET， ALT0， ALT1为三个按键，也可自己在开始的I/O定义改成你想用的I/O口；12M晶振，若用89C51则只可装下约14首歌曲，用89C52则可装下近40曲-The smallest single-chip system, the two LED digital tube by the serial output driver 164 then two, Lout, Rout output for the left and right channels, SET, ALT0, ALT1 three buttons can also be their own at the beginning of the I/O definition change you want to use the I/O port 12M crystal, if one uses a 89C51 only loaded about 14 songs can be loaded with 89C52 under near 40

MC9S12C中文介绍及编程练习,对于初学单片机的人很有用！-Introduction and Programming MC9S12C Chinese practice, for the beginner who SCM useful!

51通过CH375读写U盘的源码和原理图-51 CH375 literacy through the U-source and schematics