
Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree. They write new content and verify and edit content received from contributors.
Primary Editor, All Movie Guide. Author of Television Cartoon Shows: An Illustrated Encyclopedia, 1949 through 2003 and From Beautiful Downtown Burbank: A Critical History of Rowan and Martin's Laugh-in, 1968-1973.
Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree. They write new content and verify and edit content received from contributors.

National Broadcasting Co., Inc., major American commercial broadcasting company, since 2004 the television component of NBCUniversal, which is owned by the Comcast Corporation.
The oldest broadcasting network in the United States, the National Broadcasting Company (NBC) came into being on November 15, 1926, with a gala four-hour radio program originating from the ballroom of the Waldorf-Astoria Hotel in New York City. NBC was the joint effort of three pioneers in mass communications: Radio Corporation of America (RCA; nowRCA Corporation), American Telephone and Telegraph (now AT&T Corporation), and Westinghouse Electric Corporation. Two early radio stations in Newark, New Jersey, and New York CityâWJZ, founded by Westinghouse in 1921, and WEAF, founded by the American Telephone & Telegraph Company in 1923âhad earlier been acquired by RCA and, after NBC was created, became the centres of NBCâs two semi-independent networks, the Blue Network, based on WJZ, and the Red Network, based on WEAF, each with its respective links to stations in other cities.
The formation of NBC was orchestrated by David Sarnoff, the general manager of RCA, which became the networkâs sole owner in 1930. Although he had envisioned NBC primarily as an informational service, the network gained its stronghold in the radio industry with such pure-entertainment efforts as Amos ânâ Andy and The Jack Benny Program. In 1943, under pressure from the Federal Communications Commission (FCC), NBC sold the less-lucrative Blue Network to Edward J. Noble, who eventually changed its name to the American Broadcasting Company, Inc. (ABC). (By 1938 the more prosperous Red Network was carrying 75 percent of NBCâs commercial programs.) In 1948 NBC suffered severely when it lost several of its leading performersâincluding Jack Benny, George Burns and Gracie Allen, Freeman Gosden and Charles Correll (Amos ânâ Andy), Edgar Bergen, and Red Skeltonâto the Columbia Broadcasting System (CBS; now CBS Corporation) in a talent raid, thereby losing an edge in the upcoming television age.
On April 30, 1939, with its broadcast of the opening ceremonies of the New York Worldâs Fair, NBC began a regular television service, and by 1951 it had established a coast-to-coast television network. Despite the success of such programs as The Howdy Doody Show (1947â60) and Kraft Television Theatre (1947â58; another version appeared on ABC in 1953â55) and such stars as Milton Berle and Sid Caesar, NBC television perennially ran second in the ratings to CBS. Even so, NBC remained a leader in the field of technological advancements, notably the development of RCAâs colour television system, which the FCC accepted as the industry standard in 1953. That year NBC pioneered the first coast-to-coast transmission of a colour television broadcast, and in 1956 it made the first television broadcast recorded on videotape (rather than presented live).
Under the guidance of Sylvester L. (âPatâ) Weaver, who served as chief programmer and network president from 1949 to 1955, NBC television launched a number of other innovative concepts. Among these were the early-morning news and entertainment series Today (1952â ); the late-night talk show The Tonight Show (1954â ); Wisdom (1957â65), which featured interviews with distinguished guests in the fields of arts, sciences, and politics; and the irregularly scheduled network âspectaculars,â of which the 1955 musical Peter Pan was a prime example. Later, NBC introduced The Huntley-Brinkley Report (1956â71), a half-hour newscast anchored by Chet Huntley and David Brinkley; the made-for-TV feature film; the miniseries; and the nightly âafter hoursâ talk show, with Tomorrow (1973â82). The network also broke new creative ground with the comedy and variety series Rowan and Martinâs Laugh-in (1968â73) and Saturday Night Live (1975â ).
Though its television operations continued to expand throughout the 1960s and â70s, NBCâs radio business sagged, and in 1987 its radio network was purchased by Westwood One; it ceased operations altogether in 1999. As the result of several executive miscalculations, NBC entered the 1980s as the television industryâs lowest-rated network, running a distant third place to ABC and CBS. The situation improved dramatically when Grant Tinker and Brandon Tartikoff took over, respectively, as network chairman and chief programmer at the beginning of the decade. Despite occasional setbacks (some of which were attributed to budget cuts when NBC was purchased by GE in 1985), the network climbed to the top of the ratings with a steady diet of popular situation comediesâCheers (1982â93), The Cosby Show (1984â92), Seinfeld (1989â98), and Friends (1994â2004)âand powerful dramatic seriesâLaw & Order (1990â2010), ER (1994â2009), and The West Wing (1999â2006).
In the 1990s NBC began to establish a significant presence on cable television with the business-oriented CNBC (Consumer News and Business Channel) and MSNBC (a joint venture with Microsoft Corporation), which specialized in news and political views. In 1985 RCA was purchased by GE, and in 2004 NBC merged with Vivendi Universal Entertainment to form NBCUniversal, with GE as the majority owner. In 2009 Comcast Corporation agreed to acquire 51 percent of NBCUniversal from GE; the deal was completed in January 2011. Two years later Comcast purchased GEâs remaining shares.
Harold L. EricksonThis article was most recently revised and updated by The Editors of Encyclopaedia Britannica