Tokyo Electron Device Ltd. engages in the manufacture and sale of semiconductor products, board computer products, software and other electronic components. It operates through the Semiconductor and Electronic Device, Computer System Development segments. The Semiconductor and Electronic Device segment sells electronic components and semiconductor products such as microprocessors, memory ICs, image processors, telecom applications, and optical devices. The Computer System Development segment markets network equipment and storage devices. The company was founded on March 3, 1986 and is headquartered in Yokohama, Japan.