Television is a telecommunication medium for transmitting and receiving moving images that can be monochrome or colored, with accompanying sound...
. He founded the National Broadcasting Company
The National Broadcasting Company is an American commercial broadcasting television network and former radio network headquartered in the GE Building in New York City's Rockefeller Center with additional major offices near Los Angeles and in Chicago...
(NBC) and throughout most of his career he led the Radio Corporation of America (RCA) in various capacities from shortly after its founding in 1919 until his retirement in 1970.
He ruled over an ever-growing telecommunications and consumer electronics
Consumer electronics are electronic equipment intended for everyday use, most often in entertainment, communications and office productivity. Radio broadcasting in the early 20th century brought the first major consumer product, the broadcast receiver...
empire that included both RCA and NBC, and became one of the largest companies in the world.