serial concentrator

The following articles mainly describe the basic operating principles of the IBM DB2 connection concentrator. If you are curious about the basic operating principles of the IBM DB2 connection concentrator, the following articles will unveil its secrets. The following is a detailed description of the article. I hope you can learn from it. 1. Basic Principles Since DB2 V8, the DB2 instance has a feature calle

Brief introduction A connection concentrator is a new feature in the IBM DB2 Universal Database Version 8.0 (DB2 UDB) that handles a large number of inbound connections that have very short transactions but have relatively large delays. This feature has the following advantages: system resources are not occupied by connections that do not perform any work (idle connections). Because of multiplexing architectures, agents can switch from one to the o

This article introduces the concept and working principle of DB2 Universal Database proxy, the concept and features of the connection concentrator, and analyzes common problems and proxy Optimization on DB2 connections in detail. For your reference, I hope to help you. The DB2 agent is a process or thread located on the DB2 server that serves application requests. When an external application connects to a DB2 instance to request access, the DB2 proxy

Victor Serial port Control detailed description Class/function Header file Description Tybcommdevice Vcl.ybcommdevice.hFmx.ybcommdevice.h Serial control Tvictorcomm Vcl.victorcomm.hFmx.victorcomm.h Multi-threaded serial port class Tcommqueue Vcl.victorcomm.hFmx.victorcomm.h

In software encryption protection technology, a common protection method is license authorization based on hardware fingerprint. This article will introduce the specific hardware fingerprint acquisition technology in detail and provide a demo source code program. Hardware fingerprint encryption means that after a user obtains and installs the software for free, the software obtains some hardware information (such as the hard disk serial number and BO

Use the debug serial port as a common serial port (only for debugging and testing), and the serial port is limited Use the debug serial port as a Common Serial Port December 10, 2014 Navigation Guidance and Control Laboratory Reprinted Please note: http://blog.csdn.net/wang

The serial port debugging software uartcmd.exe and the virtual serial port software vspm can solve the problem of no hardware debugging during serial port programming. The virtual serial port equipment is output through vspm, after the program sends information to the vspm device, it can directly display the informatio

In the first article, I believe that many people can do this without reading it. However, anyone who has used the Microsoft SerialPort class has encountered this embarrassment. When the serial port is closed, the software will be deadlocked. Oh, my God, I am not so arrogant. Forget it. Don't be so absolute. 99.9% of people have encountered this problem. I think only half of them actually solve the problem. The other half closed their eyes and hoped th

Recently, due to the needs of the project, the need to get the machine's hard drive serial number and MAC address information, under C #, it is easy to obtain this information, but in the C + + program feel more trouble. After Baidu, found that a lot of prawns are through the WMI to obtain these hardware information, the network also has relevant code, through the actual debugging, but also found that it is indeed possible to obtain this information t

On the internet to find a few examples of traversing the serial port, either the code is not complete, or there is a bug, such as reading the serial number is more than 10.After my finishing, now share the final code, VS2008 under the compilation.This method is also useful for traversing Windows power-on startup items with just a few modifications.void Cenumportdlg::enumport (void) {HKEY HKEY; LPCTSTR lpsub

A vc serial port written by Indians and an Indian vc serial port Software Introduction A project written by IndiansVC serial port(AlsoVC serial control), And he also writes it in combination with this class.VC Serial CommunicationSome basic knowledge, such as how to useVC op

configured to take effect650) this.width=650; "src=" Http://s1.51cto.com/wyfs02/M00/76/3F/wKiom1ZNzHuBYz9XAAERluXOhuQ086.png "title=" ps.png "alt=" Wkiom1znzhubyz9xaaerluxohuq086.png "/>Third, the virtual machine add serial port1. the steps required to add a serial port on a virtual machine are as follows Select Cloud Host right - Edit Settings - Virtual machine Properties - add -

Http://blog.chinaaet.com/detail/25424.html Continue to learn the serial communication of ADSP-BF533 today, UART (Universal Asynchronous Receiver ER/transmitter (UART) Port) interface, is a full duplex universal serial interface, composed of RX and TX two lines, the extended RS232 chip can communicate directly with computer serial ports, which is usually used as

Tcgetattr function is used to obtain terminal-related parameters. Parameter FD is a terminal file descriptor, and the returned result is stored in the Termios structure. Http://baike.baidu.com/view/5644808.htm?fr=aladdin The TCSETATTR function is used to set the terminal's related parameters Tcflush UNIX terminal I/O functions. Role: Empty terminal incomplete input/output requests and data for baud rate settings are usually done using the cfsetospeed and Cfsetispeed functions. The baud rate info

On a blog analysis of the serial drive initialization section, the following step-by-step analysis of serial port drive in the open serial, data transmission and reception. Initialize main workflow: First to analyze the serial port to open the operation process, or first figure: Here, the analysis is inseparable fro

In order to solve the limitation of the number of physical serial ports, the virtual serial port software should be used as far as possible in serial debugging experiment. VSPD (Virtual Serial Ports Driver) is a virtual serial port software designed by Eltima software compan

The single chip microcomputer multi-byte serial port receive (high-order research of serial port multi-byte receive send)Original address: Http://bbs.ednchina.com/BLOG_ARTICLE_3007162.HTMWork for more than a year, wrote a lot of single-chip computer serial program. The sense of the serial port multi-byte receive part o

Document directory References The previous two Articles respectively described how to use Windows Embedded Source Tools for Bluetooth and 32feet. NET for Bluetooth development under. NET Compact Framework. The links are as follows:Windows Embedded Source Tools for Bluetooth development under. NET Compact Framework32feet. NET for Bluetooth development under. NET Compact FrameworkThis article describes the development of Bluetooth Virtual Serial Po

The serial cable can be divided into straight chain and intersection. Generally for straight line extension PC equip, will 2, 3, 5 connect 2, 3, 5, because PC universal male. But the devices are mostly female, so they are just plain, and it can also be used to extend the connection; the crossover PC is connected to the PC with 2 pairs of 3, 3 pairs of 2, 5 to 5, and the general two are female at both ends!Before the computer appeared, the EIA establis

The serial line also points through and crosses, pass-through is generally used to extend the PC and equipment, will be 2, 3, 5 respectively connected 2, 3, 5, because the PC is generally male, and the device is mostly female, so just they are universal, can be used for extension can also be used for connection; crossover is generally used for PC docking with PC, 2 to 3, 3 to 2, 5 to 5, usually both ends are female!Before the computer appeared, the EI