lpt1 cable

10BASE-T: Twisted-pair cable, generally use rj-45 connector, the maximum effective transmission distance is from the hub 100m, even high-quality 5 twisted pair can only reach 150m. Its matching resistance is 120 euro. 10BASE5: Coarse coaxial cable, with insert-type joints, baseband signal, maximum support length of 500m, up to 100. Its matching resistance is 75 euro. 10BASE2: Fine coaxial

desktop computer, and there is no network card, you can buy a small USB external WiFi, plug in the desktop can also share WiFi. (As long as the PC can ping the IP on the phone) Check the phone-side connection to the PC side to share out the WiFi after assigning the IP, assuming it is 172.19.10.5, then open the command line on the PC side. Tap command adb connect 172.19.10.5. many times the first case will appear: " Unable to connect to 172.19.10.5:5555 ". What is this for? , because th

advent of optical fiber communication technology, the large potential bandwidth capacity of nearly 30THz has brought the flourishing opportunity to the communication field, especially since the information superhighway was put forward, the optical technology began to permeate the whole communication network, and the optical fiber communication has the trend of advancing to all optical network. Optical fiber communication has gone through more than 20 years in our country. The market is the life

I. Optical Fiber1. OverviewThe optical fiber is similar to the coaxial cable, but there is no mesh shielding layer. The center is the glass core of light transmission. In multimode optical fiber, the core diameter is 15mm ~ 50mm, roughly equivalent to the hair width of a person. The diameter of the Single-Mode Optical Fiber Core is 8mm ~ 10mm. The outside of the core is surrounded by a glass envelope with a lower refractive index than the core to keep

Overview ● Three models available: 4300, 4000 PL, and● Use the world's most durable cable tester to test, authenticate, and file your cables and cables. Use high-speed digital processing technology for fast testing.● Outstanding diagnosis functions make troubleshooting easier and faster● Brand new PM06! The test head is the first neutral, shielded plug that can test Cat 6 compliance with standards and interoperability● The new permanent link adapter c

In companies, businesses, homes, schools, as long as there are networks where there are network cables, but sometimes to add a network cable from a long way through a layer of barriers to pull the network cable to the destination, It took a lot of money. The company often want to add a machine here, there to add a punching machine. To pull the network line from the ceiling, very dirty, and black, so I had

Talking about Cable Modem broadband access technology and its maintenance when talking about Cable Modem broadband access technology and its maintenance, we need to first understand what Cable Modem?1 Cable Modem the concept Cable Modem is also known as a

Currently, cabling system installers and network technicians are still using older Cable Fault Locating tools based on analog technology that was just 40 years ago. Even tools that use these simulation technologies often identify cables incorrectly or cannot discover signals in common work environments, they are the only choice. This is the case until today. R D engineers of fluke networks have applied decades of specialized

A few years ago, people thought that the unshielded twisted pair copper cable had reached its limit in the fifth category of MHz. Many users and manufacturers turned their attention to the optical fiber and thought that the optical fiber is an inevitable transitional path for IT facilities. The optical fiber solves the disadvantages of unshielded twisted pair wires in various aspects: it has higher bandwidth, longer distance, higher security, complete

Several problems should be noticed in the connection of optical cable. 1. Note the depth of the knife when opening the optical cable. The key to open the outer sheath of optical cable is to master the depth of the cutting tool, otherwise it is easy to break the fiber. In the actual operation, should rotate the sheath cutting knife, while observing the incision,

The cable system is designed and constructed for the convenience of the landlord, but the landlord and the facility manager usually have no knowledge or measure of the interior of the room to ensure the proper design and installation of the cable system. General contractors and construction managers are generally not experts on telecommunication cables, nor can they take into account the best interests of t

These two days the USB cable lost, always find colleagues to borrow also inconvenient, so on the internet to find a variety of methods, here summed up the simplest, of course, your phone needs root:1 to open WiFi, mobile phone and computer in the same LAN, this you can use your development machine to share WiFi can, I use the WiFi Sharing wizard, a button to do2 installing ADB Wireless on your phone3 after installing the ADB Wireless on your phone, pr

Android Developers all know that real machine debugging requires connecting the mobile phone to the PC, and then deploying the application to the real machine for installation and debugging. The long USB cable is troublesome, And it is inconvenient to connect the USB interface to other devices. Today, we will introduce a method for debugging a real machine without passing the USB cable. First, let the mobil

Function: Let the computer shut down a key to boot, need the target computer motherboard support, and plug in the network cable;Effect: the equivalent of manually pressing the target computer's switch button.No technical content, simple came David ...1. Get the target MAC addressQbytearray smacaddr ("00-1f-16-26-d5-73");2. Package Magic Package ChmagicpacketChar chmacaddr[9];//should be 6 characters, but if you write 6 characters, the following sscanf

# Include # Include # Include# Include # Include# Include # Include Int main (INT argc, char ** argv){Int fd_recv =-1;Struct ifreq IFR;Fd_recv =Socket (af_inet, sock_packet, htons (0x0003 ));If (fd_recv Fprintf (stderr, "PACKET socket error/N ");Exit (-1 );}Strcpy (IFR. ifr_name, "eth0 ");If(IOCTL (fd_recv, siocgifflags, IFR) Fprintf (stderr, "IOCTL siocgifflags error/N ");}Else {/* Network cable plug-in, iff_running set, else not */Fprintf (stderr,

My operating system is Linux Mint 17.2, the board is Nexys 3, ise version is 14.7.Ise installation is not a problem, it is downloading. Bit to the board when the hint of error, engaged in a night, finally succeeded! Write down the process and hope it will solve your problem.Searching the Internet for this problem, there is a solution seems useful (but I do not use it), https://paddydempster.wordpress.com/2008/04/08/ Using-xilinx-usb-cable-on-ubuntu-wi

If you want external devices to access the local website, use the network cable to access the network connected by the route. if you want to ask a non-wireless network adapter, the local server will be connected by a wireless network card, an external device can access a local website through an automatically generated ip address, and the ip address becomes 192.168 after the network cable is connected throu

First, minicomFedora is not like the previous redhat, can not directly input minicom Enter, because there is no modem in the directory/dev/sub-directory, and minicom run by default is the directory, so the direct knock is not. But you can enter Minicom-s carriage return, so you can set the path of Minicom,/dev./modem to/dev/ttys0, and then set a soft connection, ln-s/dev/ttys0//dev/modem enter, you can. Then you can enter the minicom.Second, USB serial cableGeneral USB Serial line with the PL230

The premise is that your computer must be able to access the Internet.1. Enable the "file"-"connection settings" option in the synchronization software "Microsoft ActiveSync", remove "√" before "allow connection establishment through USB", and press OK.2. In the "Start"-"other"-"other"-"attachment" of the mobile phone, select "modem link", select "USB" in the "connection" column, select "Activate" in the "menu", and connect the phone and computer with a USB