Yes, whether you have Dial-Up, LAN, DSL, T1, Wireless or Satellite, you need a modem in order to convert the information to a format that your PC can understand. Therefore, it would be considered a "widely used communication device".
widely used communications device is a
modem
The Modem
mouse keyboard monitor modem non of these
mouse keyboard monitor modem non of these
A communication device is a peripheral used for communication between the computers and other devices. Modem is a popular communication device which is normally used for Internet communication. Infrared, Bluetooth and LAN card are the examples of communication devices.
modem
A modem
The device you are referring to is called a Modem.
modem is device which is used to connect the Internet to computer
Not in the strictest sense. It is an IO device and a converter. They often do have processors on them, and they are used for conversion, compression, and decompression.
A device used to connect a computer to the internet is a modem.