How to connect two computers

1. Serial Port (COM) connection:
The highest transmission rate (using a 16550uart standard chip) is about 14 kbps. It uses a multi-core (at least three cores) cable and two 9-or 25-pin D-plug, connected in the prescribed wiring order, there are also sold finished lines on the market.
After completing the configuration, connect the two d headers to the serial ports of the two computers, run the "Direct cable connection" program in the Windows attachment, and use one side as the host, and the other side as the household machine, the Host resources can be shared by the client, and vice versa. This is a one-way relationship. If the host itself is connected to the network, the client can also access the network.
2. Parallel Port (LPT) connection:
The maximum transmission rate (using EPP/ECP enhanced standards) is approximately 300 kbps, which uses a multi-core (at least 11 cores) cable and two 25-pin D-plug, connect according to the specified wiring order. After completing the connection, connect the two d headers to the serial ports of the two computers and run the "Direct cable connection" program in the Windows accessories, select a port in the software and use the LPT1 port. Others are the same as serial port connections.
Iii. Modem connection:
The highest transmission rate (for cats with 56 K pairs) is 56 kbps. The "Super Terminal" program in the Windows attachment can be used to connect two computers through dial-up. However, this is not only unable to guarantee the speed, but also wastes a lot of telephone fees, there is also a plug-in modem that can be directly connected.
The modem used for direct connection must support the leased line. There are two leased line Methods: hardware leased line and analog leased line, while most modem supports analog leased line. In addition, the direct method requires support from the software telix, and the software is loaded into two separate brains. Connect the line ports of the two modem lines with the RJ-11 head delivered by a modem to the line ports of the two modem respectively. Do not connect them to the phone ports. When the dual machine runs telix at the same time, "OK" will appear on the screen. Then, type ATD on one machine (dial-up), type ATD on the other computer (answer), and press Enter, then the two hats will be called and data can be exchanged.
I. Network Card Interconnection

1. Create a network cable

Before connecting to the network, we should first consider the production of the network cable. Generally, if you use twisted pair wires to build a network, you need a hub. When you connect to the network through a hub, the cabling method of twisted pair wires is very easy. You only need to clamp the two network cables one by one, the order of cabling is the same on both sides: 1. White orange, 2, orange, 3, white green, 4, Blue, 5, white blue, 6, green, 7, white Brown, 8, Brown. Note that both ends are in the same line Order and correspond one to one. This is the M network cable line standard, that is, the 568b standard, that is, what we usually call the main line or standard line.

However, as a small network with only two machines, it is a waste of a few hundred yuan to buy a hub. In fact, we can directly connect the two computers with a network cable instead of a hub, however, there will be some slight changes in the network cable practice at this time. By changing the network cable sequence, we can achieve dual-host interconnection without hubs. The specific method is: one end uses the above 568b as the line standard, and the other end swaps the positions of line 1 and line 2 and line 6 of the eight lines on this basis, the line sequence of the network cable becomes: 1. White green, 2, green, 3, white orange, 4, Blue, 5, white blue, 6, orange, 7, white Brown, 8, Brown. This is the M network cable 568a standard, which is what we usually call the anti-line or cross-line. After the cable sequence is arranged according to the 568b and 568a standards at one end, a network cable suitable for direct connection between two computers is ready.

2. Nic Installation

After the network cable is ready, the next step is to install the network card. Here we take TP-LINK TF-3239V NIC (10 M/M dual-speed adaptive Nic, using realtek8139 main chip) in Win98 installation process as an example to make a simple introduction.

First turn off the host power, TF-3239V Nic inserted into the motherboard an idle PCI slot, fixed after inserting, then start Win98, enter Win98 after the system will prompt to find new hardware, enter the hardware Installation Wizard, start to search for the driver. Select "specify a location", find the path of the NIC Driver (for example, a:/Win98), and click "OK, at this time, the system will start copying the required files. After the system is complete, the system will prompt whether to restart. Click "OK" and the system will restart. Then, the NIC installation process will be completed successfully. The NIC installation process for other * Operating systems such as Win2000 is similar.

3. Network Settings

After the NIC is installed, the following is the last and most difficult step of Dual-host Interconnection: network settings. Here, I also use the network settings under Win98 as an example. First, we need to check whether the system's network components have been fully installed: Select "Network neighbors" on the desktop, right-click to open its properties, and check whether there are the following items in the configuration list: realtek8139 network adapter (NIC), Microsoft Network Customer (service), TCP/IP protocol (Protocol), file and printer sharing service on Microsoft Network (service ). To connect to a LAN and share resources, the above components are essential. If not, you can add them directly here. Then, set the IP address, select "TCP/IP-à realtek8139 network adapter" (that is, the network adapter's TCP/IP protocol settings), open its properties, and enter "192,168" in the IP address bar, "255,255,255", subnet mask is "192,168, 0", and then click "OK" to return to the "network" Main Screen (the IP address of another computer is ", the subnet mask is the same). In the identification item, you should enter different names for the two computers, but their working groups should be the same. In the access control item, select the share level, click "OK" and restart the computer as prompted. Pay attention to network logon when restarting your computer. Start the computer and enter the Win98 page. Right-click my computer and select the drive or folder to be shared, click share in the shortcut menu, and enter the share name in the dialog box, set the sharing type and access password as needed. In this case, a palm appears on the drive or folder, indicating that the folder has been shared. Now we can access another computer through a network neighbor just like using local resources.

2. Direct cable connection

Using Direct cables to connect through the computer's serial port or parallel port is also a common solution for dual-host direct connection. Compared with network card connection, this solution is more practical for users who do not require high network quality. Its advantages are convenient connection and low cost. Of course, its shortcomings are obvious:

1. Relatively short connection distance:

The length of the parallel cable using "Direct cable connection" should not exceed 3 meters. Within this distance, we can ensure that we are in progress.DataStable and complete during transmission. This method is applicable to two computers that are very close to each other. If you want to connect to a computer from a distance, this connection method is definitely not feasible;

2. When a serial port cable is used for connection:

TransmissionDataThe speed may be slow, so if you connect to two computers for playing games, this method is generally not suitable. But in general, direct cable connection is a cost-effective and easy networking method when you only have two computers. Communication cables are essential for dual-host Direct cable connection. We recommend that you purchase them directly at a local computer store or network company. It is mainly divided into two types: serial port cable and parallel port cable. It should be noted that you should choose the communication cable used for computer and computer connection, do not select the computer and printer and other peripherals connected to the communication cable. These two cables are generally not interchangeable. After buying the cable, use it to connect the two computers. Start the computer and enter the Win98 system. Select Start> program> accessories> communication> Direct cable connection (if not, choose "Control Panel"> "Add/delete programs"> "Windows Installer"> "communication"> "Direct cable connection ". Set "protocol", "identifier", and "share" in "network", and set the port as prompted, set one server and the other client. In the "Direct cable connection" option, select "listener" for the host, select "connection" for the client host, and enter your username and password to connect to the host. In this case, the client can use various resources on the host, including network resources.DataYou need to take the hard disk and get it.

The above two methods are the simplest and most commonly used to achieve dual-host interconnection. There are many other methods, such as using infrared port connection and using MODEM Remote sharing, which will not be described in detail here.
Generally, if you purchase a 1394 adapter card installed on your PC, its external holes are all 6 pin connectors, And the pcmcia 1394 card used in your laptop is also a 6 pin connector, the C1 Mr series's built-in 1394 connector uses 4 pin. Therefore, if you want to connect to your PC, you must have a 6 pin to 4 pin cable. If you want to connect two C1 servers, you must use a 4 pin to 4 pin cable. With the cable, your operating system must be Windows ME or Windows XP before you can use 1394 point-to-point transmission. Others, such as Windows 98 or Windows 2000, cannot be transmitted, windows NT 4 does not support 1394!
First, connect the two computers with a cable, and your system will detect the hardware and install related files. Most 1394 adapter cards do not require additional driver installation, the system generally supports! Here the system is dominated by Windows XP, and the use of Windows ME is the same, but the setting screen is a little different.
Step 1: Click Start> network neighbors, and right-click.
Step 2: click "properties.
After entering the network neighbor setting screen, you will see your current system connection options in the screen on the right. If you have installed the network adapter, there should be a "Local Area connect). In addition, there is a 1394 connection, there will be a "1394 connection" option, where the system will regard 1394 as a type of Nic.
Because your system currently has two NICs, if both are connected, which one is involved? In Windows XP, there is an option called "bridging", which allows you to connect multiple networks and set them by bridging. How can we connect them? It's easy. You just need to select the network adapter that you want to connect in series first, and then right-click the network adapter to display the option of adding to the bridge, and press it to connect all the networks you want, of course, if you want to undo the bridge, you can select it again!
After setting the bridge, we will go to it and set it. Right-click the bridge and select "attribute" To Go To The setting options, here, we only need to set an option called "Internet Protocol (TCP/IP. Because most of the current networks use TCP/IP protocols, to allow two computers to share resources with each other, they must place their IP addresses in the same network segment. For example: the "TCP/IP" address of one computer is set to 192.168.0.1, And the other computer is set to 192.168.0.2, so that both IP addresses are in the same network segment. If your computer has a DHCP function, you do not need to set it here. The system uses it in advance to automatically obtain an IP address. A dynamic IP address is obtained when connected.
However, due to the development of broadband networks and the prevalence of LAN, a server is usually set up to take charge of DHCP services, generally, when using ADSL or leased lines, you can also use shared devices sold on the market or set up a connection sharing setting to allow more than two computers to access the Internet, this is usually implemented using the Network Address Translation (NAT) technology. Most of the obtained IP addresses are IP addresses such as 192.168.0.x.

V. USB port connection:

There is a dedicated USB pair cable, dozens of Yuan