The telephone is a device that converts sound into electrical signals for communication. It allows two or more people to have a conversation when they are too far apart to hear each other. Signals are carried through wires or transmitted through electromagnetic waves.
Kuvakäsikirjoitus Teksti
TELEPHONEThe telephone is a device that converts sound into electrical signals for communication. It allows two or more people to have a conversation when they are too far apart to hear each other. Signals are carried through wires or transmitted through electromagnetic waves.