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Is a computing device that is capable of receiving, storing and processing information in a useful form. A computer is programmed to perform logical or arithmetic operations automatically. -
The telegraph is an apparatus or device that uses electrical signals for the transmission of coded text messages, such as Morse code, over wired lines. -
A device that receives and transmits long distance communications and is connected to a telephone network. -
Radio is a means of communication based on the sending of audio signals via radio waves.at a distance such as Internet radio. -
System for remote transmission of images and sounds by means of Hertzian waves. -
Is a type of portable computer, larger than a smartphone or PDA. -
Is a portable device that can make or receive calls over a radio frequency carrier while the user is moving within a telephone service area.