Serial interface is referred to as serial interface, also known as serial communication interface or serial communication interface (usually referred to as interface), is the use of serial communication method of expansion interface. Serial Interface (Serial Interface) refers to the sequential transmission of data one by one, its characteristics
Serial interface is a simple communication line, as long as a pair of transmission lines can be realized in two-way communication (you can directly use the telephone line as a transmission line), which greatly reduces the cost, especially suitable for long-distance communication, but the transmission speed is slow. The communication method in which each bit of data of a message is transmitted bit by bit in sequence is called serial communication. Serial communication is characterized by: transmission of data bits in bit order, at least only one transmission line can be completed; low cost but slow transmission speed. The distance of serial communication can be from a few meters to several kilometers; according to the direction of information transmission, serial communication can be further divided into simplex, half-duplex and full-duplex three.
Network cable: To connect to a LAN, a network cable is essential. There are three main types of network cables commonly found in LANs: twisted-pair cables, coaxial cables, and fiber-optic cables. Twisted-pair cable, is composed of many pairs of wires for data transmission line it is characterized by inexpensive, so it is widely used, such as our common telephone lines and so on. It is used to connect with RJ45 crystal head. It also has two kinds of STP and UTP, we commonly use UTP.
Question 2: Is the network cable serial or parallel port? Network cable does not have a serial and parallel port points, only RJ45
Question 3: How to use the computer serial port online You are talking about the serial port line or network cable Serial port is a nine-pin shape similar to the trapezoidal and a lot larger than the crystal head of the network cable Network cable we all know
If you want to use the serial port to connect the two computers need to be programmed and the speed is also relatively slow Used to network the basic game impossible
1.the easiest way to connect to the two computers is to use the serial port to connect the two computers. Brown; the other end into a Class A RJ45 connector, the line sequence is: white green, green, white orange, blue, white blue, orange, white brown, brown, can be This is the easiest way to connect two computers directly into a LAN. (No need for a switch.)
After the network cable is ready, you need to set the ip address
3, the same workgroup LAN
Right-click "My Computer" - "Properties "-" Computer Name "-" Change "to change", the two workgroups After shutting down or rebooting, double-click "Online Neighborhood" - "View Workgroup Computers" to find out.
The software environment for this method is based on the netbios/netbeui protocol, which is the default configuration for WinXP, Vista, and Win7, so you don't have to look for it to install.
4, set the same IP network segment
Separately set the IP address of the two computers to the same class C network segment can be. For example:
PC 1 IP 192.168.0.2 Mask 255.255.255.0 Gateway 192.1.68.0.1
PC 2 IP 192.168.0.3 Mask 255.255.255.255.0 Gateway 192.1.68.0.1
Based on this setup, you can complete the file ******* and online game.
This is the first time I've ever seen a computer with a serial port on an LED display, and I've never seen one. Nine-pin serial port function list
Pin Function
1 Carrier Detection (DCD)
2 Receive Data (RXD)
3 Send Data (TXD)
4 Data Terminal Ready (DTR)
5 Signal Ground (GND)
6 Data Ready (DSR)
< p> 7 Request to Send (RTS)8 Clear to Send (CTS)
9 Ringing Indication (RI)
Connection 235 Same for both ends! Since you did not provide which control card! You can't just take one end and swap it with the other!
Oh ` upstairs ` network cable is 8 core ` only connect 3 cores on the line ` a pin corner to connect two cores ` the remaining two cut off it! I specialize in doing LED display screen ` do not understand you can consult with me!
Question 5: Is there any software that can convert a laptop Ethernet port to a serial port? I want to do debugging network equipment directly with a network cable connected to the device console port on the line. Network device console port is a serial port
Connection required is the computer serial port, there is no serial port on the u *** extension, such as the E810
Question 6: Is there a laptop Ethernet port can be converted to serial port software? Think of doing debugging network equipment directly with a network cable to connect the device console port on the line. 10 points No, there are USB to serial port device, with software is not able to change the hardware form, the computer network port directly corresponds to the network card. Serial port with RJ45 header is a normal 9-pin serial port converted over, only 3 wires, 9-pin serial port in only 2-3-5 port three wires, I hope to help you
Problem 7: the public a network, how to **** to enjoy the other people's computers on the serial port? Host control panel → network → network **** enjoy → create a new **** enjoy connection → allow connection to this network After the setup, modify the different IP of the same network segment on the hope that this answer will be useful to you
Problem 8: Can the router be used as a network serial port Router line depends on what the interface, if it is an Ethernet interface are generally used copper twisted-pair cable or fiber optic, twisted-pair is the same, divided into three types, five types, and three types of cable. The cable is divided into three categories, five categories, ultra-five, six categories, fiber optic and network cable is different.
Question 9: What is the meaning of "wireless serial port" in the computer configuration XL01-232AP1 is a UART interface half-duplex wireless transmission module that can work in the 433MHz/868MHz/915MHz public frequency band. It complies with European ETSI (EN300-220-1 and EN301-439-3) and FCC 15.247/15.249 certification specifications and meets the wireless control requirements without the need to apply for a frequency use license. The module uses a high performance base frequency crystal to meet the requirements for use in industrial environments. XL01-232AP1 uses serial debugging software to set the output power (0-25dBm), serial rate (1.2KBPS-38.4KBPS), RF rate (1.2KBPS-25KBPS), serial format (8N1,8O1), operating frequency, product ID and so on. Give customers convenient and quick use. Provides TTL/RS232 two kinds of interface choices.
2000 meters transmission distance (measured on the road, the specific distance shows the actual environment) Operating frequency in the 427-441MHz/856-882MHz/902-928MHz (500Hz step) can be set ID: range 0-65535, the default ID:12345 Convenient and quick parameter setting Short switching time: 200us for receive→transmit; 800us for transmit→receive Operating voltage: 3.3V/5V (please note the mark when ordering) Sensitivity of C114dBm (RF rate: 2.4Kbps) Receiving current: 17mA Transmitting power: 0, 5, 10, 15dBm Transmitting current: [email protected] More than 60 channels 256bytes data buffer. Suitable for large data transmission. Built-in watchdog, PIC microcontroller to ensure long-term reliable operation. Modify settings online. Applications: Wireless sensors. Home automation. Wireless meter reading. Automation data acquisition. Industrial remote control, telemetry. POS system, asset management. Building community automation and security . Robot control . Vehicle management. Meteorology, remote sensing. XL03-232AP2 communication channel is half-duplex, can be used for point-to-point communication, easy to use, in the programming of the serial port, as long as it is remembered for the half-duplex communication mode, and always pay attention to the send and receive back and forth timing can be. XL03-232AP2 module works normally in the default state of the data receiving. It can also be used in point-to-multipoint communication mode, which requires firstly setting up a master station and the rest as slaves, all stations are programmed with a unique address. The coordination of communication is completely controlled by the master, the master uses the data frame with address code to send data or commands, the slave station all receive, and will receive the address code local address code comparison, different will be all the data will be thrown away, do not do anything in response; address code is the same, it proves that the data is given to the local, the slave station according to the data or commands passed over to the different response to the response to the data to be sent back. All of this work needs to be done by the upper layer protocol, and can ensure that at any one instant, only one radio in the communication network is in the transmitting state, so as not to interfere with each other. Low power consumption (hibernation) function description: In order to further reduce energy consumption, XL03-232AP2 support hibernation function, into the hibernation, the current consumption >
Problem 10: two computers nine-pin serial port or network cable connected to the transfer of files program Serial port is fully capable of transferring files. The main need for a serial docking line linking the two computers serial port, and then need two computers are installed according to a set of the same serial port file transfer software. In accordance with the requirements of the software settings, mainly after the same baud rate, you can start file transfer, but the serial port speed is relatively slow, the general is 9600 bits per second, if you set a higher speed, it may cause crc checksum retransmission time consuming. This transfer and set up the software is not complex, generally have the port programming experience programmers can quickly write a set, and the serial port docking cable is not very good to find, you can buy 2 serial port interface and then weld their own, the Internet has a standard 9-pin pin control chart, the main data transmission foot and another interface to the acceptance of the foot connected to the interface, and *** with the same ground can be, there are a lot of the rest of the pins are spare.
The network port allows for better and faster file transfers. Need a 2 computers docking cable, note that this cable is different from the general link hub or router cable, the Internet also has this cable production diagram (in fact, the main is to reverse one end of the ordinary cable). Then it is best to set the network card of the two computers to the same IP segment, and then rely on windows comes with a copy of the ding file function can be communicated to transfer files, it is important to note that this windows needs to be set up beforehand to the source computer **** enjoy the folder or disk drive, and the other computer to get access to the file permissions (username and password login is more reliable).