

For converting the digital data (0s and 1 s) into an analogue signal.And for demodulating the digital signal into an analogue signal. Modems are mainly used for modulating the analogue signal to a digital signal. The modem is a device that is also used for transferring analogue signals from LED( Light Emitting Diodes) to radio.The main purpose of a modem is to generate a signal that can be easily transmitted and to decode to reproduce the digital data into its original form.It is also used for decoding carrier signals to demodulate the transmitted data.The modem is a device that is used to modulate the analogue signal to digital signals.


A router is used to connect your devices to your home network ( also known as a Local Area Network or LAN) or WiFi network so that your device communicates wirelessly. A modem is a device that is used to connect networking devices to the Internet. Modems and routers are very different networking devices and perform separate functions.
