rs232 crossover

The RS232 interface is a standard for serial communication jointly developed by the American Association of Electronic Industry (EIA) and bell system, modulation regulator manufacturers and computer terminal manufacturers in 1970. Its full name is "Technical Standard for Serial Binary data exchange interfaces between data terminal devices (DTE) and data communication devices (DCE)", which requires a 25-pin db25 connector, specify the signal content o

Blog directory:1, the UART and RS232, RS485 relations:2, RS232 and RS485 of the difference and pin introduction3. Reference documentsThe text is as followsI. The relationship between UART and RS232 and RS485:Communication problems, and traffic is the same. Serial communication, we can use bus to analogy.Bus operation can be easily divided into two parts: 1, Stati

Learn VC serial port programming, understand the standard of serial protocol is necessary, in fact, the serial port relative to other interfaces (such as USB interface) is very simple. RS232 Serial port Standard is the United States EIA (Electronic Industry Federation) and Bell and other companies developed a communication protocol. It is suitable for the data transmission rate within the 0~20000BIT/S range of communication.

Note: This method can perfectly solve all the problems of this article http://www.cnblogs.com/EasonJim/p/7118693.html, and does not affect any function of the present system, it can be said to be quite perfect.The principle is to use the crossover container to start the virtual QQ, the QQ version is generally relatively new, so there will be no international version of the problem. But the use of large resources is also a problem, but now the machine

Description of RS232/RS485/rs422 Interface Converter The DMUs series converter is a standard RS232/RS485/rs422 converter that completes the electrical conversion between the serial RS232 and RS485/rs422, and can extend the maximum communication distance to 1200 meters (4000 feet ). DMUs adopt the basic three-line system (txd, rxd, Gnd). No software driver is

CAN bus/RS232 interface design [Date:] Source: foreign electronic components by Zhao Jie, Liu weijing, Sun Huijia, Li Nan [Font:Large Medium Small] 　 1 IntroductionCAN is called "Controller Area Network", that is, Controller LAN, is an international standard, high-price Field Bus, plays an important role in the field of automatic control. CAN is a multi-master serial communication bus with high real-time performance. Therefore, it

This paper describes the design of the controller based on RS232 interface. It uses a single-chip microcomputer to control the interface chip nat914, and uses SCPI statements in the Super Terminal of the serial communication tool that comes with the winelows operating system, the communication and program-controlled operation between the computer and the Kaplan instrument is realized. More and more measuring instruments provide the general purpose int

A usb to RS232 converter can be used in wince to convert USB to RS232, that is, the usb host of the wince device is connected to the USB end of the USB to RS232 converter, the RS232 end of the USB to RS232 converter can be connected to the

php5| Application Demo I. Prior knowledge: What is rs232/rs484 and its application? QUOTE:RS232 interface is a serial port, computer chassis rear of the 9-core (or 25-core) socket, next to the general has "| o| o| "Sample identification.The general chassis has two, the new chassis may have only one. Laptops may not be available.There are many industrial instruments that use it as a standard communication port. The content and format of the communic

Introduction Ray has many important applications in 3D graphics. For example, the pick operation is implemented by Ray, and Ray can be used for bullet Ray collision detection. Therefore, in this blog, we will briefly introduce how to perform Ray-triangle cross detection. Ray-triangle crossover Detection Algorithm In the Mt97 thesis of Tomas Moeller, a new algorithm is proposed. This algorithm reduces the memory consumption required for Ray-triangle

Serial Port is a very common device communication protocol on the computer. --------------------------------- Serial Port Pin definition: 9 Cores Signal Direction from Abbreviations Description 1 Modem CD Carrier Detection 2 Modem Rxd Receive data 3 PC Txd Send data 4 PC DTr Data Terminal preparation 5 Gnd Signal Location 6

measured in hundreds of millions, and the resources are insufficient for hash. This question can be abstracted as a linked list crossover problem with loops and no loops: Scenario 1:Two single-chain tables have no rings In the simplest case, because if two linked lists overlap, their tail nodes must be equal (Y word merge), so you only need to judge whether their tail nodes are equal. Scenario 2:Two single-chain tables have Loops In this case, you

For cross and direct connections: The order of the 568a line is from left to right: white green, green, white orange, blue, white blue, orange, white Brown, and brown. 568b is: White orange, orange, white green, blue, white blue, green, white brown, brown. Crossover refers to the 568a standard end and 568b standard twisted pair wire end.In this case, both ends are 568a or 568b standard twisted pair wires. The order of the

differential transmission mode, also known as balanced transmission, it uses a pair of twisted pair, the first line is defined as a, the other line is defined as B. Normally, the power plane between drive a and drive B is equal to + 2 ~ + 6 V is a logical state with a negative level ranging from-2 V ~ 6 V is another logical state. Another signal C, there is a "enable" side in the RS-485, and in the RS-422 this is available can be used. The enable end is used to control the disconnection and con

Differences between TTL level and RS232 level ? When I encountered a problem about the level selection, I forgot the definition of the RS232 level. At that time, I was unable to respond. After I came back, I found out the difference between the two, it may take more than two years for you to forget some common sense that you were familiar with before. This is not a good phenomenon. :-), or copy the differen

First, the new data sourceSecond, the Operation procedureFill in cell C1 =to (1,3) set to scale outFill in cell C2 =to (21,22) set to scale outFill in cell C3 =to (13,15) set to scale outIn cell A4, fill in the =to (11,13) setting to scale verticallyIn cell B4, fill in the =to (31,33) setting to scale verticallyFill =max (c1{}) in cell D1, and take the maximum value after cell expansion in C1Fill in the D2 cell with =sum (c2{}), and the C2 cell expandsFill in the D3 cell with =sum (c3{}), and th

There are 8 wires in the cable, divided into 4 pairs, each of which is a pair of twisted pair wires, in turn: (orange, orange); (green, green); (Blue, Blue ); (brown, white) The sorting order of 568a is from left to right: green white, green, orange white, blue, blue white, orange, brown white, and brown. 568b: Orange, orange, green, blue, blue, green, brown. Among them, 1 and 2 are used to send data, 3 and 6 are used to receive data, 4 and 5 are used to transmit voice, and 7 and 8 are used t

The difference between RS485 and RS232: RS232 is full-duplex communication, when the data is sent, you can also receive data, but you may feel unclear, such as in the application, you go to the operation of the serial port writing, you do not feel able to read the serial port data, because the CPU is a single core, CPU only one brain, Only one person is working, so you will feel you to operate the seria

Article Title: Nexenta, a crossover between Solar and Ubuntu. Linux is a technology channel of the IT lab in China. It includes desktop applications, Linux system management, kernel research, embedded systems and open source. Imagine that you have a reliable operating system, such as Ubuntu hard, to remove its Linux kernel, replaced by OpenSolaris kernel? Then combine Debian apt-get with Solaris's ZFS file system? What you get now is the new but promi

Module Fenpin #(Parameter n=25000_000)(CLK,CLR,CLK0,CLK1,CLK2,CLK3,CLK4);Input clk,clr;Output CLK0,CLK1,CLK2,CLK3,CLK4;Reg CLK0,CLK1,CLK2,CLK3,CLK4;REG[12:0] Cnter0;REG[4:0] Cnter1,cnter2,cnter3,cnter4;[Email protected] (Posedge CLK or Negedge CLR)if (~CLR)cnter0Elseif (cnter0==n-1)Begincnter0EndElseBegincnter0End [Email protected] (Posedge clk0 or Negedge CLR)if (~CLR)cnter1Elseif (cnter1==9)Begincnter1EndElseBegincnter1End[Email protected] (Posedge clk1 or Negedge CLR)if (~CLR)cnter2Elseif (cn