社区管理信息系统的设计与实现,与一些相关的资料

SPI RTC MAX6902实时时钟的驱动和应用笔记，及其驱动代码，网上很少关于SPI 的，大家参考一下，一定要8个字节一起写。-SPI RTC MAX6902 RTC driver and application notes, and the driver code, on-line small on the SPI, we refer to, we must write 8 bytes together.

基于嵌入式操作系统的无功补偿控制器设计 平台为UCOS-II 加 TMS320LF2407。 版权归西北工业大学 及其作者。-Embedded operating system based on reactive power compensation controller design platform UCOS-II plus TMS320LF2407. Belongs to the Northwest Industrial University and the author.

ti公司的达芬奇平台的user guide，是入门的文档。-ti da Vinci platform

关于低密度奇偶校验码的生成，采用matlab编写，主要是校验矩阵的产生 -on low-density parity-check code generation, prepared using Matlab, mainly for the selection of calibration matrix

介绍一种采用半桥电路的开关电源，其输入电压为交流220V±20％，输出电压为直流4～16V，最大电流40A，工作频率50kHz。重点介绍了该电源的设计思想，工作原理及特点。-Introduction of a half-bridge circuit using the switching power supply, the input voltage for AC 220V ± 20, output voltage of DC 4 ~ 16V, maximum current 40A, operating frequency of 50kHz. Focuses on the design of the power of thought, working principle and characteristics.

介绍USB分析仪器的商机，是一个非常好的项目。有兴趣可以做-USB devices on the business opportunities, is a very good project. Interested can do

在现代化的工厂里，对生产流程进行图像监控是提高企业管理水平、加强生产调度、合理安排工作人员、及时发现重大生产设备事故隐患的一个重要措施。-in the modern factory, the production processes for image control is to raise the level of corporate governance, the strengthening of production scheduling, reasonable arrangements for staff, the timely production equipment found significant risks of an important measures.

BPSKQPSK的二阶载波跟踪环,附matlab程序和dsp程序!-BPSKQPSK second order carrier tracking loop, with matlab processes and procedures dsp!

1. 完成时／分／秒的依次显示并正确计数，利用六位数码管显示； 2. 时／分／秒各段个位满10正确进位，秒／分能做到满60向前进位，有系统时间清零功能； 3. 定时器：实现整点报时，通过扬声器发出高低报时声音； 4. 时间设置，也就是手动调时功能：当认为时钟不准确时，可以分别对分／时钟进行调整； 5. 闹钟：实现分/时闹钟设置，在时钟到达设定时间时通过扬声器响铃。有静音模式。 -1. Completed/min/sec display and correctly followed by counting, using six digital tube display 2. When/min/sec in the paragraphs of the correct 10-bit binary full, s/sub can do to advance the age of 60-bit, systematic function of the time cleared 3. timers: realize the whole point of time, by the time the level of sound from loudspeakers 4. time settings, which is manually adjusted when the function: When the clock does not consider accurate, they can respectively sub/clock adjustments 5. alarm clock: the realization of sub-/ when the alarm clock settings, settings in the clock arrival time ringing through the loudspeakers. There are silent mode.