1.1 | Connecting to the Internet | |||
1.1.4 | NIC and modem installation |
Connectivity to the Internet requires an
adapter card, which may be a modem or NIC.
A modem, or modulator-demodulator, is a device that provides the computer with connectivity to a telephone line. The modem converts (modulates) the data from a digital signal to an analog signal that is compatible with a standard phone line. The modem at the receiving end demodulates the signal, which converts it back to digital. Modems may be installed internally or attached externally to the computer using a serial or USB interface. The installation of a NIC, which provides the interface for a host to the network, is required for each device on the network. NICs are available in different types depending on the individual device configuration. Notebook computers may have a built-in interface or use a PCMCIA card. Figure shows PCMCIA wired and wireless NICs. Desktop systems may use an internal or external NIC. Situations that require NIC installation include the following:
To perform the installation of a NIC or modem the following resources may be required:
|