Oki Semiconductors is a famous worldwide supplier of Silicon and Optical products. Very important is the growing family of ARM based µPlat microcontrollers.

Please find more about Oki at
http://www.okisemi.com/eu/ for Europe,
http://www2.okisemi.com/us/docs/Home.html for America and
http://www.okisemi.com/jp/english/ for Asia.