Description: delphi 控制modem的代码,与调治解调器通信的好例子-delphi modem control code, and modulation demodulator good example of the communication Platform: |
Size: 93212 |
Author:sbl |
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Description: 网络通信协议,Modem /串口通信,代理服务器编程,高级网络通信编程-network communication protocol, modem / serial port communications, proxy server program, the Senior Network Communication Programming Platform: |
Size: 4795033 |
Author:江西 |
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Description: 基于44b0使用ucos2.8操作系统的全部源码，成功移植了lwip1.1.1，ppp和gprs modem的驱动，可通过GPRSmodem实现网络通信-based on the use of 44b0 ucos2.8 all-source operating system, lwip1.1.1 a successful transplant, ppp and gprs modem driver, through GPRSmodem network communication Platform: |
Size: 772967 |
Author:kfd76 |
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Description: 用VB实现上位机与PLC之间的串行通信.pdf
Windows环境下的Modem串行通信编程.pdf
基于VB的通信中间件的开发与实现.pdf
基于来电显示的销售管理系统的设计于开发.pdf
下周五VB中MScomm控件通信方式的使用.pdf
顶下-using VB and PLC Serial Communication between. Pdf environment of Windows Mo dem serial communication programming. pdf VB-based communications middleware development and implementation. pdf on the CND Sales Management System in the development of the design. pdf next Friday VB MScomm control the use of means of communication. pd f acquired Platform: |
Size: 865419 |
Author:李顺 |
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Description: 串口通信,基于串口的PC机的通过MODEM收发短消息的代码-serial communication, the serial port on the PC through the modem Sending and Receiving Short Messages by the code. Platform: |
Size: 62872 |
Author:alsdfj |
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Description: 一个串口通讯的很好的学习源码；可以直接操作gsm modem-a serial communication is a good source of learning; Can operate directly gsm modem Platform: |
Size: 10167 |
Author:陈峰 |
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Description: 目前较为常用的串口有9针串口（DB9）和25针串口（DB25），通信距离较近时(<12m)，可以用电缆线直接连接标准RS232端口(RS422,RS485较远)，若距离较远，需附加调制解调器（MODEM）。最为简单且常用的是三线制接法，即地、接收数据和发送数据三脚相连，本文只涉及到最为基本的接法，且直接用RS232相连，以回答前段网友的咨询。-now more commonly used serial 9-pin serial port (projectors) and 25-pin serial port (DB25), Communication at close distance ( Platform: |
Size: 6741 |
Author:steven |
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Description: This project aim was to build wireless software modem for data communication
between two computers using an acoustic interface in the voice frequency range (20Hz–
20,000Hz). The transmitting antenna is a speaker (frequency response of: 90Hz –
20,000Hz) and the receiving antenna is a microphone (frequency response of: 100Hz –
16,000Hz). The test files used as information files were text files.
This goal was attained both in an incoherent scheme and in a coherent scheme.
Build under Matlab code, our modem uses OFDM (orthogonal frequency division
multiplexing) modulation, synchronization by LMS sequence, channel estimation (no
equalizer) via pilot tones. The symbols are either PSK or ASK for a constellation size of
2 or 4. To optimize the probability of error, these symbols were mapped using Gray
mapping.
Report Platform: |
Size: 559541 |
Author:buyop |
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Description: MODEN串口通讯的例子挺经典的。是一个学习的好例子。-modem serial communication very classic example. The study is a good example. Platform: |
Size: 170539 |
Author:阿才 |
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Description: VB 5.0/6.0的MSComm通信控件提供了一系列标准通信命令的接 口，它允许建立串口连接，可以连接到其他通信设备（如Modem）、 还可以发送命令、进行数据交换以及监视和响应在通信过程中可能 发生的各种错误和事件，从而可以用它创建全双工的、事件驱动 的、高效实用的通信程序。-VB 5.0/6.0 the MSComm control communications for a series of standard communication interface orders, which allow for the establishment of serial link can be connected to other communications equipment (such as modem), and also can send orders, the exchange of information and surveillance and response in the communication process may mistakes that occurred in the incident, which can be used to create full-duplex, event-driven, highly effective and practical communication program. Platform: |
Size: 5392 |
Author:徐徐 |
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Description: 串行口是计算机一种常用的接口，具有连接线少，通讯简单，得到广泛的使用。常用的串口是RS-232-C接口(又称EIA RS-232-C)它是在1970年由美国电子工业协会(EIA)联合贝尔系统、调制解调器厂家及计算机终端生产厂家共同制定的用于串行通讯的标准。它的全名是\"数据终端设备(DTE)和数据通讯设备(DCE)之间串行二进制数据交换接口技术标准\"该标准规定采用一个25个脚的DB25连接器，对连接器的每个引脚的信号内容加以规定，还对各种信号的电平加以规定。传输距离在码元畸变小于4%的情况下，传输电缆长度应为50英尺。 Linux操作系统从一开始就对串行口提供了很好的支持，本文就Linux下的串行口通讯编程进行简单的介绍.-computer serial port is a common interface, with connecting lines, simple communications, to be widely used. It is commonly used serial RS-232-C interface (also known as the EIA RS-232-C) it is in 1970 by the American Electronics Industry Association (EIA) Joint Bell System, a modem manufacturers and computer terminal manufacturers developed for serial communication standards. Its full title is "data terminal equipment (DTE) and data communications equipment (DCE) between serial binary data exchange interface technology standards," the use of a standard 25 feet to the DB25 connector, the connector pin of each signal content requirements, but also the right signal -- Ping be provided. Transmission distance in yards yuan distortion is less than 4% of the cases, the length of transm Platform: |
Size: 1962 |
Author:东方旭 |
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Description: MODEN串口通讯的例子挺经典的。是一个学习的好例子。-modem serial communication very classic example. The study is a good example. Platform: |
Size: 169984 |
Author:阿才 |
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Description: VB 5.0/6.0的MSComm通信控件提供了一系列标准通信命令的接 口，它允许建立串口连接，可以连接到其他通信设备（如Modem）、 还可以发送命令、进行数据交换以及监视和响应在通信过程中可能 发生的各种错误和事件，从而可以用它创建全双工的、事件驱动 的、高效实用的通信程序。-VB 5.0/6.0 the MSComm control communications for a series of standard communication interface orders, which allow for the establishment of serial link can be connected to other communications equipment (such as modem), and also can send orders, the exchange of information and surveillance and response in the communication process may mistakes that occurred in the incident, which can be used to create full-duplex, event-driven, highly effective and practical communication program. Platform: |
Size: 5120 |
Author:徐徐 |
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Description: 本人用powerbulider写的一个用于危险品管理的程序，可实现异地通过调制解调器连接数据库，降低通讯成本。主要用于公安部门对危险品的运输、销售、盘点、销毁、上报等的管理，程序短小，效率高。奇怪，居然开发环境中没有powerbulider 是不是站长对pb有偏见？-I used to write one for the management of dangerous goods procedures can be realized in different localities via modem to connect to the database, reducing communication costs. Mainly for the public security departments of the transport of dangerous goods, sales, inventory, destruction, reported to the management, procedures tall, high efficiency. Strange Surprisingly, the development environment is not powerbulider head right pb biased? Platform: |
Size: 391168 |
Author:alum |
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Description: 串口通信的光纤调制解调产品“光猫”的AT89C2051单片机完整源代码及其说明-serial communication fiber modem products "- cat" AT89C2051 integrity of the source code and its description Platform: |
Size: 23552 |
Author:黄先生 |
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Description: 本书全面介绍了UNIX系统的程序设计界面—系统调用界面和标准C库提供的许多函数。 本书的前15章着重于理论知识的阐述，主要内容包括UNIX文件和目录、进程环境、进程控制、进程间通信以及各种I/O。在此基础上，分别按章介绍了多个应用实例，包括如何创建数据库函数库，PostScript 打印机驱动程序，调制解调器拨号器及在伪终端上运行其他程序的程序等。 本书内容丰富权威，概念清晰精辟，一直以来被誉为UNIX编程的“圣经”，对于所有UNIX程序员—无论是初学者还是专家级人士—都是一本无价的参考书籍。 -the book a comprehensive account of the UNIX system programming interface-system call interface and the standard C library provides a lot of functions. The book's first 15 chapters focus on theoretical knowledge exposition, includes UNIX files and directories, processes, process control, inter-process communication and I/O. On this basis, according to introduce a number of application examples, including how to create database libraries, PostScript printer driver, a modem and a dial-up in pseudo-terminals running on other procedures procedures. The book is rich in content authority, brilliantly clear concept has been praised as UNIX Programming "Bible" for all UNIX programmers- whether beginners or experts- who are an invaluable reference books. Platform: |
Size: 14537728 |
Author:林风 |
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Description: 本书全面介绍了UNIX系统的程序设计界面—系统调用界面和标准C库提供的许多函数。 本书的前15章着重于理论知识的阐述，主要内容包括UNIX文件和目录、进程环境、进程控制、进程间通信以及各种I/O。在此基础上，分别按章介绍了多个应用实例，包括如何创建数据库函数库，PostScript 打印机驱动程序，调制解调器拨号器及在伪终端上运行其他程序的程序等。 本书内容丰富权威，概念清晰精辟，一直以来被誉为UNIX编程的“圣经”，对于所有UNIX程序员—无论是初学者还是专家级人士—都是一本无价的参考书籍。 -the book a comprehensive account of the UNIX system programming interface-system call interface and the standard C library provides a lot of functions. The book's first 15 chapters focus on theoretical knowledge exposition, includes UNIX files and directories, processes, process control, inter-process communication and I/O. On this basis, according to introduce a number of application examples, including how to create database libraries, PostScript printer driver, a modem and a dial-up in pseudo-terminals running on other procedures procedures. The book is rich in content authority, brilliantly clear concept has been praised as UNIX Programming "Bible" for all UNIX programmers- whether beginners or experts- who are an invaluable reference books. Platform: |
Size: 14538752 |
Author:neptune87140104 |
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Description: 嵌入式modem编程，基于80c196芯片。其中的通讯规约是基于102抄表协议但有所改动。-embedded modem programming, based on 80c196 micro-computer chips. The communication is based on the Statute of 102 meter reading agreement but has been modified. Platform: |
Size: 2048 |
Author:hxb |
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Search - modem communication