widely used communications device is a
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".
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.
Television is the most widely used form of mass media.
sometimes, depends on what you are using it for
A cellular device