DD

说明：  Unix 成组链接法 模拟UNIX系统的空闲块成组链接法，实现磁盘存储空间的管理(Unix Group Links UNIX System Simulation of spare pieces Group link, disk storage space to achieve the management)

单片机程序控制实现函数发生器的功能，在函数发生器中起主控制作用(SCM process control functions to achieve the function generator, function generator in the role play the main control)

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.)

j1939在康明斯电控发动机上的应用情况和基本概念(j1939 electronically controlled Cummins engine in the application and basic concepts)

protues的教程，初学者的必备，可以学习很多东西，对自己收益很大(study protues)

ATMEGA48 头文件 适用于 ICCAVR7.0 有些版本没有ATMEGA48的头文件(ATMEGA48 )

基于STM32的16位DAC8811驱动程序，亲测可用(STM32-based 16-bit DAC8811 driver, pro-test available)

Android多线程断点续传下载 可以试试(Android multi-threaded HTTP download)

标准Modus通讯协议和接口定义,公司项目使用中，非常稳定，实用，请有需要朋友下载。(The standard Modus communication protocol and interface definition, project use, very stable, practical, need friends to download.)

通过使用能。Keil 51工具和VC++来实现按键的功.(Achieved by using the Keil 51 tools and VC++ of the key functions.)