Toshiba was responsible for a number of Japanese firsts, including radar (1942), the TAC digital computer (1954), transistor television and microwave oven (1959), color video phone (1971), Japanese word processor (1978), MRI system (1982), laptop personal computer (1986), NAND EEPROM (1991), DVD (1995), the Libretto sub-notebook personal computer (1996) and HD DVD (2005). (*)