John Logie Baird, a Scottish engineer, successfully demonstrated the first working television system in public in 1926.

The Nipkow disk, named after its inventor Paul Nipkow, was a mechanical television system that used a rotating disk with holes to scan images.

Philo Farnsworth, an American inventor, developed the electronic television system using the cathode ray tube (CRT) in the 1920s.

The Iconoscope was the electronic television camera tube developed by Philo Farnsworth, which used a mosaic of photoemissive cells to capture images.

The Kinescope was the electronic television receiver tube developed by Vladimir K. Zworykin, which used a cathode ray tube to display images.

Radio Corporation of America (RCA) was the first company to commercially produce and sell televisions in the United States, starting in 1939.

The RCA Model 630TS was the first commercially successful television model produced by RCA, released in 1946.

The Federal Communications Commission (FCC) approved the first television broadcasting standards in the United States in 1941.

The 1939 New York World's Fair is widely considered to be the start of the television era in the United States, as it was the first time that a large number of people were able to see television broadcasts.

The Today Show, hosted by Dave Garroway, was the first regularly scheduled television broadcast in the United States, starting in 1952.

The Jackie Robinson Story, a television film about the life of baseball player Jackie Robinson, is credited with being the first to break the color barrier on American television in 1950.

NTSC (National Television System Committee) was the first color television broadcasting standard adopted in the United States in 1953.

The 1954 World Series between the New York Giants and the Cleveland Indians is widely considered to be the start of the color television era in the United States.

Telstar 1 was the first satellite to broadcast television signals globally, launched in 1962.

The development of digital signal processing led to the rise of high-definition television (HDTV), as it allowed for the transmission of higher-quality video and audio signals.