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Quizlet's primary products include digital flash cards, matching games, practice electronic assessments, and live quizzes. In 2017, 1 in 2 high school students used Quizlet. [ 4 ] As of December 2021, Quizlet has over 500 million user-generated flashcard sets and more than 60 million active users.
Demonstration of a 30-channel cable TV system in the Netherlands in March 1981. The very first cable networks were operated locally, notably in 1936 by Rediffusion in London in the United Kingdom [5] and the same year in Berlin in Germany, notably for the Olympic Games, and from 1948 onwards in the United States and Switzerland. This type of ...
Satellite TV receiver dishes. Cable system operators now receive programming by satellite, terrestrial optical fiber (a method used primarily to relay local stations based within metropolitan areas to the franchise, and acts as a backup for the system operator if a broadcast station's over-the-air signal is affected by a power outage or other ...
HBO was the first true premium cable (or "pay-cable") network as well as the first television network intended for cable distribution on a regional or national basis; however, there were notable precursors to premium cable in the pay-television industry that operated during the 1950s and 1960s (with a few systems lingering until 1980), as well ...
The following is a list of pay television networks or channels broadcasting or receivable in the United States, organized by broadcast area and genre.. Some television providers use one or more channel slots for east/west feeds, high definition services, secondary audio programming and access to video on demand.
The genesis of the Fox Broadcasting Company took place through two 1985 transactions made by News Corporation, headed by Australian publishing magnate Rupert Murdoch.After a failed takeover of Warner Communications, Murdoch purchased a 50 percent interest in 20th Century-Fox Film Corporation (TCF) on March 20, 1985, for $250 million.
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This is possible over cable TV or through an Internet connection but is not possible with a standard antenna alone. Some of these systems support video on demand using a communication channel localized to a neighborhood rather than a city (terrestrial) or an even larger area (satellite).