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本系统分电压测量和信号产生输出两大部分，电压测量部分以模拟电路为主，配合放大模块、A/D转化模块、显示模块；通过凌阳单片机进行数据处理，在误差允许范围内显示测量电压值。信号产生以直接数字式频率合成器为核心，经过AT89S52对DDS芯片内部进行控制，使之输出标准正弦波形，利用编程实现频率预置、步进，达到电压输出频率的可调节步进。通过调试与测量完成了题目的基本部分和全部发挥部分的要求并有自己的创新。-Voltage measurement points of the system and the output of two major signals, voltage measurement circuitry to simulate the main part, with the amplification module, A/D conversion module, display module through Sunplus Single-chip data processing, in the range of error allowed shows the value of measuring voltage. Signal generated by direct digital frequency synthesizer for the core of the DDS chip AT89S52 after the internal control standards so that the output sine wave shape, frequency of use of pre-programming, step to the output voltage adjustable frequency step. Debugging and measurement, through the completion of the basic part of the topic and all the requirements to play a part and have their own innovation.

10分钟学会PLD,仿真，下载，原理图，布线-10 minutes Society PLD, simulation, download, schematics, wiring

12位DA芯片TLC2543驱动程序 12位DA芯片TLC2543驱动程序-12 DA chip TLC2543 driver 12 DA chip TLC2543 driver

CH451键盘显示芯片的控制程序--Control program for CH451 keyboard s display chip.

扫描键盘，包括原理图和程序，汇编和c的程序，方便大家使用-Scanning the keyboard, including schematics and procedures, compile and c the procedures for the use of U.S.

pic16f883 7 电压计项目

关于手机BOOTLADER相关，请有这方面经验的朋友与我联系-BOOTLADER on the mobile phone related, please have experience in this area to contact me friends

模拟UART程序(C语言)-simulation UART (C language)

很好的资料!vc++与labview的交互编程---在vc环境下调用labview下生成的dll库-good information! Vc and the LabVIEW programming-- in the interactive environment called vc labv iew generated in the library dll

嵌入式系统的网络仿真-Embedded System Network Simulation