It's call a NIC (Network Interface Card)
Yes.
If you are referring to a modem, the it is a device that allows your computer to connect to the internet.
A wireless USB adapter allows a computer or wireless device to connect to a wireless router. It is needed for any device which is not wired to an internet connection, to connect.
A device used to connect a computer to the internet is a modem.
Network Interface Card used for connection with computer. Wireless router to connect internet with mobile. Wifi adapter also used to connect internet with your computer.
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The primary example of a hardware component that allows user data input is a keyboard.
Hardware is the physical parts that are connect inside your computer. Hardware Devices are the hardware drivers installed on your hard drive.
Your Network card, or "Network Interface Device" is used to connect to the Internet. This will generally be either integrated in the Motherboard, or inserted as a PCI card (or PCMCI for a laptop).
A modem allows your computer to connect to a phone line.
Often referred to as a "wi-fi" card, a NIC or "network interface card" is used to intercept signal output from another device such as a router. Most modern laptops carry an 802.11 card.
A wireless NIC (Network Interface Card) is a hardware component that allows a device to connect to a wireless network. It enables the device to send and receive data wirelessly using Wi-Fi technology. Wireless NICs are commonly found in laptops, smartphones, tablets, and other devices that require wireless internet connectivity.