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the fully functional and complete all-electronic television system and the first fully functional all-electronic image pickup device -
Mobile phones were first proposed in 1947 when ATT suggested the FCC allocate radio spectrum frequencies for widespread service. However, the first commercially viable mobile phone didn't arrive until 1983. -
In 1972, the introduction of the home VCR and cassette revolutionized entertainment by offering consumers 240 minutes of recording time. This innovation transformed "home entertainment," allowing viewers to watch movies without having to go to the theater or miss television shows. -
The first high-definition television (HDTV) broadcast in the United States took place in the late 1990s, but the development of HDTV began earlier. In the late 1970s, the Japan Broadcasting Corporation (NHK) started creating a new standard with a wider screen and higher resolution. By 1980, prototype sets showcased picture clarity far superior to previous models. -
Digital video discs, or DVDs, were introduced in 1995 and can store software, data, and video files. They are the same size as CDs but have a much higher storage capacity. Primarily used for pre-recorded content like movies and TV shows, DVDs use impressive technology that stamps data onto the discs, making them read-only and unable to be erased. -
Two decades after the CD-ROM and a decade after the DVD came the Blu-ray disc, launched in 2002. The Blu-ray disc supported the world's new high-definition video demands, with greater storage capacity and higher-quality videos.