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In page Toshiba:

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Toshiba is responsible for a number of Japanese firsts, including radar (1912)[citation needed], the TAC digital computer (1954), transistor television, color CRTs[4] and microwave oven (1959), color video phone (1971), Japanese word processor (1978), MRI system (1982), personal computer Pasopia (1981), laptop personal computer (1986), NAND EEPROM (1991), DVD (1995), the Libretto sub-notebook personal computer (1996) and HD DVD (2005). In 1977, Toshiba acquired the Brazilian company Semp (Sociedade Eletromercantil Paulista), subsequently forming Semp Toshiba through the combination of the two companies' South American operations.