A modem (short for modulator-demodulator) is a device that enables a computer or other digital device to connect to the internet or a network over a telephone line, cable, or fiber optic connection. It works by converting (modulating) digital data from the device into analog signals that can travel over the connection medium, and then converting (demodulating) incoming analog signals back into digital data that the device can understand.
In essence, the modem serves as a translator between the digital world of your devices and the analog signals used by communication networks.
There are different types of modems, such as:
- Dial-up modems (older technology, use phone lines)
- DSL modems (Digital Subscriber Line, for high-speed internet over phone lines)
- Cable modems (for broadband internet over cable TV lines)
- Fiber modems (for high-speed fiber-optic connections)