We have come a long way and now, “The sky’s the limit.” We have regular television, known as terrestrial (land), cable which brings signals through underground cable, microwave signal transmission, and satellite. Today there are many satellites orbiting the earth. Transmitters on the ground are beaming signals up to the satellite, and then they are beamed back down to another receiver.
ETV and PBS made breakthroughs in making new types of television available. Digital television (DTV) and interactive television (ITV) transformed television as we knew it. DTV give us TV with high quality sound and picture. Digital technology also allows a lot of data to be transmitted into our homes to be used by the computer or television set. Interactive television uses digital technology to bring you shows through televisions, laptops, tablets and smartphones.
Pictured above: ETV Sattelites send and receive digital signals