LemonSMS is a component developed in Java that provides a turnkey solution for application developers to incorporate into their Java applications the functionality of Sending and processing of incoming SMS messages.
LemonSMS acts as a middleware between a Java application and a GSM Modem or Data enabled phone. Because LemonSMS only provides an interface to the added SMS functionality, your application still handles access to data and business logic tier. With the easy-to-use LemonSMS API, developers can easily utilize SMS functionalities provided by LemonSMS.
This book describes the following communications applications: Mail, Message Handler( MH), Transmission ControlProtocol/ Internet Protocol(TCP/ IP), Basic Networking Utilities( BNU), and Asynchronous Terminal Emulation( ATE). It provides overviews, concepts, and procedures on receiving and Sending mail and messages, transferring files( ftp command), printing files from and to a remote system, running commands on other systems, communicating between local and remote systems, and customizing the communications environment.
These two classes show an extremely simple example of java.net socket programming. They implement the Unix daytime protocol, an extremely simple protocol that consists entirely of the server Sending its current local time and date to the client as an ASCII string. The server, to keep it very simple, does not use multiple threads. This code requires JDK 1.1 or later, but can easily be adapted to JDK 1.0.
Windows CMD Emulator is Based Upon Creating a Pipe to Read and Write Data to, it Opens a CMD Window Hidden and Starts Sending and Receiving Data from it using a simple SetTimer Event
as a message came into prominence with the publication in 1948 of an influential paper by Claude Shannon, "A Mathematical Theory of Communication." This paper provides the foundations of information theory and endows the word information not only with a technical meaning but also a measure. If the Sending device is equally likely to send any one of a set of N messages, then the preferred measure of "the information produced when one message is chosen from the set" is the base two logarithm of N (This measure is called self-information). In this paper, Shannon cont
SharpPcap c#抓包實現時時獲取網卡信息
SharpPcap tutorial: a step by step guide to using SharpPcap
The text of this tutorial is taken directly from WinPcap's official tutorial but is modified to show the C# use of the SharpPcap library. All examples can be downloaded together with SharpPcap source code from SharpPcap 's homepage. The WinPcap library must be installed before attempting to run any of these examples, so please download and install the latest version from WinPcap's download page.
SharpPcap was written and tested using .NET v1.1 and Windows 2000/XP. I have no idea about other .NET and Windows versions. If you do try it, please report your results.
The following topics are covered in this tutorial:
Obtaining the device list
Obtaining advanced information about installed devices
Opening an adapter and capturing packets
Capturing packets without the event handler
Filtering the traffic
Interpreting the packets
Handling offline dump files
Sending Packets
Gathering Statistics on the network traffic
1. Obtaining the device list
Communication protocols – for short protocols – form the basis for the opera-
tion of computer networks and telecommunication systems. They are behavior
conventions which describe how communication systems interact with each other
in computer networks. Protocols define the temporal order of the interactions and
the formats of the data units exchanged. Communication protocols comprise a
wide range of different functions and mechanisms, such as the Sending and receiv-
ing of data units, their coding/decoding, error control mechanisms, timer control,
flow control, and many others.
CAN總線是汽車上應用最廣泛的車載網絡總線,具有實時性強、可靠性高、成本低等優點。鑒于此,介紹了一種利用飛思卡爾系列單片機MC9S12XS128作為控制器,利用其內部的MSCAN模塊、CAN收發器TJA1040等外圍元件進行CAN總線通信節點設計。該設計能夠實現CAN總線數據的發送與接收,可應用于汽車及其他各種CAN總線通信系統。CAN bus is the most widely used on-board network bus in automobiles. It has the advantages of realtime, high reliability and low cost. In view of this,this paper introduces the design of CAN bus communication node by using Freescale MC9S12XS128 as controller,using its internal MSCAN module,CAN transceiver TJA1040 and other peripheral components. This design can realize the Sending and receiving of CAN bus data,and can be used in automobile and other CAN bus communication systems.
基于TMS320F28035芯片為控制核心的空間矢量異步電機變頻器 我們設計的異步電機變頻調速器以TMS320F28035芯片為控制核心，通過輸出三相PWM波控制智能功率模塊IPM驅動三相異步電機。我們使用空間矢量SVPWM算法，并對其進行了優化。采用檢測反電勢的方法省去了昂貴的光電編碼器，大大節省了成本。同時開創性的研發了自動根據運行環境調節的自適應變頻算法，使我們的變頻調速器可以在電網條件惡劣的鄉村山區工作，由此該變頻器已被一家民用水泵生產企業預訂。關鍵字 變頻器 TMS320f28035 IPM SVPWM In our design, the asynchronous machine inverter based on the chip of TMS320F28035 drives the three-Phase asynchronous machine by Sending three-phase PWM waves to the IPM, which is short for the Intelligent-Power-Module. The SVPWM (space vector pulse width modulation) strategy is applied to our control algorithm and we optimize it mainly in two aspects. Firstly the inverter detects the speed by measuring the Back EMF instead of installing an expensive photoelectric encoder for costs reduction.
