Toshiba is a Japanese brand of computer . Groups created include Toshiba EMI ( 1960 ) , Toshiba International Corporation ( 1970 's ) Toshiba Electrical Equipment ( 1974 ) , Toshiba Chemical ( 1974 ) , Toshiba Lighting and Technology ( 1989 ) , Toshiba America Information Systems ( 1989 ) and Toshiba Carrier Corporation ( 1999 ) .