Fujitsu's semiconductor business started in 1956 with the commercialization of the first silicon transistor for use in repeaters of the Nippon Telegraph and Telephone Public Corporation (now NTT). In 1966, we launched Japan's first clean room for semiconductor manufacturing, fully equipped with the latest facilities at the time at Kawasaki factory, and provided internal supply of ICs for computers. Then we began a full-scale external sales business in the late 1970s and proceeded with mass production of semiconductors. The DNA of Fujitsu's semiconductor business, including the high functionality, quality and reliability of its products, has been acquired subsequently as the business grew larger and firmly passed onto the present-day Fujitsu Semiconductor Limited.