Network card? Can you tell me about it?

Network card

Desktop computers generally use built-in network cards to connect to the Internet. The network card is also called "network adapter". The full English name is "Network Interface Card", or "NIC" for short. The network card is one of the most basic components in the local area network. It is a hardware device that connects the computer and the network. Whether it is a twisted pair connection, a coaxial cable connection, or an optical fiber connection, data communication must be achieved with the help of a network card.

The main working principle of the network card is to organize the data sent from the computer to the network line, break the data into appropriately sized packets and then send them to the network. For network cards, each network card has a unique network node address, which is burned into the ROM (read-only memory chip) by the network card manufacturer during production. We call it the MAC address (physical address), and it is guaranteed to Definitely won't be repeated.

The network cards we use daily are Ethernet network cards. At present, network cards can be divided into 10M network cards, 10/100M adaptive network cards and Gigabit (1000M) network cards according to their transmission speed. If it is only used for general purposes, such as daily office work, etc., it is more suitable to use 10M network card and 10/100M adaptive network card. If it is used in product fields such as servers, it is necessary to choose a gigabit network card.