Broadcasting is the distribution of audio and/or video signals which transmit programs to an audience. The audience may be the general public or a relatively large sub-audience, such as children or young adults.

The original term "broadcast" referred to the literal 'sowing of seeds' on farms, by scattering them over a wide field. It was first adopted by early radio engineers from the Midwestern United States to refer to the analogous dissemination of radio signals. Broadcasting forms a very large segment of the mass media. Broadcasting to a very narrow range of audience is called narrowcasting.

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Broadcasting is the distribution of audio and/or video signals which transmit programs to an audience. The audience may be the general public or a relatively large sub-audience, such as children or young adults.

The original term "broadcast" referred to the literal 'sowing of seeds' on farms, by scattering them over a wide field. It was first adopted by early radio engineers from the Midwestern United States to refer to the analogous dissemination of radio signals. Broadcasting forms a very large segment of the mass media. Broadcasting to a very narrow range of audience is called narrowcasting.

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The sequencing of content in a broadcast is called a schedule. As with all technological endeavours, a number of technical terms and slang have developed. A list of these terms can be found at List of broadcasting terms. Television and radio programs are distributed through radio broadcasting or cable, often both simultaneously. By coding signals and having decoding equipment in homes, the latter also enables subscription-based channels and pay-per-view services.

In his essay, John Durham Peters wrote that communication is a tool used for dissemination. Durham stated, “Dissemination is a lens- sometimes a usefully distorting one- that helps us tackle basic issues such as interaction, presence, and space and time…on the agenda of any future communication theory in general” (Durham, 211). Dissemination focuses on the message being relayed from one main source to one large audience without the exchange of dialogue in between. There's chance for the message to be tweaked or corrupted once the main source releases it. There is really no way to predetermine how the larger population or audience will absorb the message. They can choose to listen, analyze, or simply ignore it. Dissemination in communication is widely used in the world of broadcasting.

Broadcasting focuses on getting one message out and it is up to the general public to do what they wish with it. Durham also states that broadcasting is used to address an open ended destination (Durham, 212). There are many forms of broadcast, but they all aim to distribute a signal that will reach the target audience. Broadcasting can arrange audiences into entire assemblies (Durham, 213).