2DFT

这是智能仪器的课件，对于初学编程和电路设计很有帮助的。(This intelligent instrument courseware, very helpful for the beginner programming and circuit design.)

transfer file using sound card

SQL Server 2005 Service Broker (SSB) is an asynchronous messaging technology built into SQL Server. With SSB, you essentially get the power of messaging technologies like Microsoft Message Queue (MSMQ) combined with the relational database capabilities of SQL Server, all controlled with Transact SQL statements(SQL Server 2005 Service Broker (SSB) is an a synchronous messaging technology built into S QL Server. With SSB. you essentially get the power of messaging tech nologies like Microsoft Message Queue (MSMQ) c ombined with the relational database capabili ties of SQL Server, all controlled with Transact SQL statements)

酒精测试仪proteus仿真，单片机进行分析处理，判断是否醉酒驾车，再通过液晶板显示出来。(Alcohol Tester proteus simulation, analysis and processing microcontroller to determine whether drunk driving, and then through the LCD panel display.)

用单片机c51编写的程序 使用蜂鸣器发出超级玛丽的音乐(C51 microcontroller programs written with use of the buzzer Super Mario music)

Pocket 2003 Imager_SDK_14.12.20086 for software engineereing.

NTC热敏电阻计算器（B值、R25、指定温度、指定阻值均可计算，给定四个参数即可计算第五个参数）(NTC thermistors Calculator (B value, R25, specified temperature, the resistance can be specified calculation, four parameters can be calculated given the fifth parameter))

xs128PWM调试例程工程源码学习资料(xs128PWM debugging routine engineering source learning materials)

plc 的电梯控制程序，含有组态软件,控制算法。plc 采用三菱fx1n(plc elevator control program, containing configuration software)

本项目是基于Cortex-M3 的地沟油快速检测装置，旨在实现“地沟油”快速，现场检测。MCU控制可编程的直接数字频率合成器（DDS）产生正弦激励信号，经过可变增益放大器（VGA）和低通滤波器（LPF）作用于食用油阻抗传感器（实验室制作）信号经过仪器放大器送入微控制器（MCU）的模数转化（ADC）通道，MCU对采集的信号通过快速傅里叶变换（DFT）处理，实现食用油阻抗与相角的检测；USB和以太网接口，可与计算机通讯，以便对采集的数据进行存储和分析。(The project is based on the Cortex-M3 waste oil rapid detection device designed to achieve " waste oil" rapid, on-site testing. MCU control programmable direct digital frequency synthesizer (DDS) generates sinusoidal excitation signal through a variable gain amplifier (VGA) and a low-pass filter (LPF) acting on the oil-impedance sensor (lab produced) to send signals through the instrumentation amplifier into the microcontroller (MCU) modulo conversion (ADC) channels, MCU signal acquisition via Fast Fourier Transform (DFT) processing, oil resistance and phase angle detection USB and Ethernet interfaces, and computer communication, in order to collect data for storage and analysis.)