Recieve and view Signal from com port (RS232)

modbus协议全解，modicon公司编写的协议，很权威，很有参考价值。-modbus protocol the whole solution, modicon the company prepared an agreement, it is authoritative, useful reference value.

IC卡读写程序，简单明了，实用性强，有参考价值-IC card reader procedures, straightforward, practical, reference value

gnuradio软件无线电源程序.现在的手机多基于软件无线电-gnuradio source software radio. The phone number for software radio

The dynamics of orbit uncertainty in an unstable orbital environment are discussed with specific application to the orbit determination of a halo orbit about the Earth{Sun L1 point. This article documents a simplified orbit determination covariance program developed under Telecommunications and Mission Operations Division Technology support. The program is ideally suited to investigate spacecraft trajectory navigation in challenging environments, where the basic dynamics of the trajectory can no longer be modeled using near-Keplerian motion.

ofdma 系统中的各种资源分配算法仿真-OFDMA system, the various resource allocation algorithm simulation

基于C51及SL811读写U盘的开发文档资料,包括芯片数据手册,测试命令及测试工具,电路原理图,配合基于C51及SL811读写U盘的源程序C51_SL811_ModeDisk_Program就可以产生完整的U盘读写模块-Based on the C51 and U disk read and write SL811 development documentation, including the chip data sheet, test orders and test tools, circuit schematics, with the SL811 to read and write based on the C51 and U disk C51_SL811_ModeDisk_Program source can produce a complete U-disk read-write Module

RS232 是异步串行通信协议，广泛应用在计算机上。异步意味着它不会有任何单独的同步时钟信号，所以它必须同步本身对传入的数据-这是通过使用开始和停止脉冲。信号本身是略有不寻常的计算机，而是作为比正常 0V 到 5V 范围、 它使用 + 12V-12V-到这做是为了提高可靠性，并极大地增加了它可以工作在可利用的范围-不需要提供此确切电压摆动和实际使用 PIC 0V 到 5V 电压摆动和几个电阻可以做一个简单的 RS232 接口，通常会很好但并不保证与所有串行端口的工作。为此我设计了串行板能使用 MAX232 芯片，这是专为 5V 的逻辑级别之间的接口设计的芯片和 + 12V /-12V 的 RS232-它生成的 + 12V /-12V 内部使用电容器充电泵，并包括四个转换器，两个传输和两个接收，只采用的每-其他两个一个串行董事会明确标记为电路如果需要可以用别的东西。

iPhone手机SDK编程参考书，不仅叙述详细，而且还有许多例子代码，是学习iPhone SDK编程的一本好书。-iPhone, SDK programming reference books, not only described in detail, and there are many examples of code, is to learn from iPhone SDK programming, a good book.

Turbo码性能仿真源程序信道编码方面的-Turbo code performance simulation source channel coding of

this code is about demodulation of 4qam