rs232 crossover

For 10 m/m network cabling, you only need to make 1-3, 2-6 cross connections. The other four lines are useless. However, for a gigabit network, the four lines that seem useless have come in handy. You must arrange all eight lines in the correct order. 1. Direct Connection (network card and Switch Connection) crystal head sequence (568b ): Crystal head 1: Orange, orange, green, blue, blue, green, brown, white Crystal head 2: Orange, orange, green, blue, blue, green, brown, white

This article for the original article, source code for the original code, such as reprint/copy, please in the page/code location clearly marked the original name, author and website, thank you! This software is based on NI-VISA/VISA32 (Virtual instrument software Architecture) of the instrument programming, support RS232, USB, GPIB and LAN communication SCPI instrument programming.First, the software is developed using VS2017 (can also be opened

Windows API. NET and communicate with RS232 devices: Using inheritance, there is also the idea of OO, unlike other can only be counted as a tool class. The thread is used for receiving, and the inherited classes are automatically received by the thread. One character is received at a time. Others receive a string at a time. The advantage is that, unlike others, sometimes the results are returned if the receiving is not completed. The di

The power output pin is not defined in the EIA-RS232 standard, so the RS232 interface can not find the power output pin, can only indirectly obtain the power from other RS232 pins. The most direct method is to use pin7 and pin4 pins, which are sufficient to drive mos ic chip devices such as cd4093 and lm324. In addition, you can use the following methods to obtai

There are always problems when we run Windows software on a Mac computer, so many users will install crossover on their Macs so they can run Windows software smoothly. However, crossover default does not use Chinese, in order to make our use more convenient, how can we set the crossover into Chinese? 1. Temporarily change language: If you only want

What is TTL level, CMOS level, RS232 level? What difference do they have? Generally, the CMOS level has a higher noise tolerance than the TTL level.(i), TTL level standardOutput L: Input L: TTL device output low to less than 0.8V, high level is greater than 2.4V. Input, less than 1.2V is considered to be 0, above 2.0 is considered to be 1. The noise tolerance of the input low level of the TTL level is only (0.8-0)/2=0.4v, and the noise tolerance for t

Now most of the LG TV comes with a serial port (RS232), in fact, through this serial port can completely manipulate the LG TV, and the function than with the remote control powerful. By using the serial port to send instructions, you can do some simple operation of the TV, such as Switch TV, adjust the volume, Exchange channels. You can also perform complex controls such as a tuning table. In addition to the implementation of some remote control can n

What is TTL level, CMOS level, RS232 level? What difference do they have? Generally, the CMOS level has a higher noise tolerance than the TTL level.(i), TTL level standard output L: (ii), CMOS level standard output L: (c), RS232 standard logic 1 level of -3~-15v, logic 0 level of +3~+15v, pay attention to the definition of the level is reversed once.What is the difference between TTL and CMOS level 1. The u

Twisted Pair wiresThere are generally three sort orders:Pass-through(Straight-through ),Crossover(Cross-over) andAnti-DDoS pro(Rolled) 1.Pass-throughA straight-through line is generally used to connect two interfaces of different properties. Generally used for: PC to switch/hub, router to switch/hub. The straight-through method is to make the two ends of the line order the same, either both ends are 568a standard, or both ends are 568b standard. Hub/s

Both RS232 and RS422 are widely used asynchronous serial interface standards. Because they are simple to implement and consume less resources in IO ports, it is a good idea to transfer at low speed.The RS232 is a single-ended route with a maximum baud rate of 115200 and a transmission distance of no more than 150 meters, with a logic 1 level of 3 to -15v and a logic 0 level of 3 to 15V.The RS422 is a differ

Maxcompute is a chip that converts the rs232 signal level (-10, + 10 v) of a computer serial port to the TTL signal point (0, + 5) used by a single-chip microcomputer, the price of this chip is about 6 yuan. Next I will introduce the maxcompute pin diagram, the connection circuit between maxcompute and the computer serial port, and the RS232 pin definition. ************************ * ** Maxcompute chip is t

Differences Between RS232 and RS485 1. RS-232-C is a serial physical interface standard developed by the American Association of Electronic Industry EIA (Electronic Industry Association. RS is the abbreviation of the English "Recommendation Standard". 232 indicates the ID number, and C indicates the number of modifications. RS-232-C bus standard has 25 signal lines, including a main channel and a secondary channel, in most cases the main channel,

. Differential operation is the root cause of long transmission distance at the same rate, which is the fundamental difference between the two and RS232. Because RS232 is a single-ended input and output, at least the digital ground line is required for duplex operation.. Transmission Line and receiving line (asynchronous transmission). You can also add other control lines to complete synchronization and oth

Reproduced on: RS232, RS485 Waveform Analysis I often encounter problems with single-chip serial communication for beginners and do not know how to do it. In fact, the most effective debugging method is to use an oscilloscope to observe the waveforms of the sent and received data. Observe the waveform to determine the following situations: Whether data is received or sent Is the Data correct? Whether the baud rate is correct 1. Serial Data Format

1 logic level EIA-RS-232C of electrical properties, logic and various signal line functions are defined. On txd and rxd: Logic 1 (Mark) =-3v ~ -15 V Logic 0 (Space) = + 3 ~ + 15 V On the control line such as RTS, CTS, DSR, DTR, and DCD: Effective Signal (on, positive voltage) = + 3v ~ + 15 V Invalid signal (disconnected, off, negative voltage) =-3v ~ -15 V 2. Pin Definition Pin definition symbol 1 Carrier Detection DCD Pin 1 received Line Signal Detector (data carrier dete

2. CrossoverCrossover is an important operation in genetic algorithms, which is designed to assemble a new chromosome from each of the two chromosomes. Here, a common crossover method in shop scheduling is called the Generalized Order crossover method (GOX), assuming there are three artifacts a,b,c , there are three processes under each workpiece, according to which we can randomly generate two chromosomes

Both VGA and DVI are video transmission lines. The former is the traditional analog transmission, the latter species is more, there is only the transmission of digital or analog or digital mode is transmitted, in short, the latter video signal transmission quality is higher than the former, and transmission speed faster. Many displays on the market now use the DVI interface (including HDMI, HDTV, and DisplayPort, etc.)Interfaces are very easy to differentiate:

What are the differences between VGA, DVI, RS232, UART, SCSI, SATA, and other interfaces?Both VGA and DVI are video transmission lines. The former is a traditional analog transmission, and the latter has many types, which only transmits numbers or analog or digital models. In short, the latter's video signal transmission quality is higher than the former, and the transmission speed is faster. At present, many monitors on the market use DVI interfaces

Intersection line: One is t-586a standard on the other end is the standard of t-568b can be directly connected to two computers (network card to the network card)Ordinary network cable (straight line) at both ends are generally t-568b standardSo: Need a specially made cable, or have a spare line to change it can also be changed only a head. When making the crystal head, the other end of the 1th and 3rd to swap, 2nd and 6th root swapAbout intersection lines and straight lines:the line order of 56

Crossover is an optimized wine + commercial version that removes the hassle of wine configuration and makes Windows software installation easy in Ubuntu ..... Some transplanted software also has official maintenance, and the execution effect is better than others ..... We can see that crossover provides many installed Windows programs. Select a program to be installed and install it directly ...... In th