EXHIBIT 8.1 Significant Subsidiaries of 02 MICRO INTERNATIONAL LIMITED 0//2//Micro, Inc., a California corporation 0//2//Micro Electronics, Inc., a Taiwan company 0//2//Micro International Japan Limited, a Japanese company 0//2//Micro PTE Limited, a Singapore company 0//2//Micro (Wuhan) Co. Ltd., a Chinese company 0//2//Micro (Beijing) Co. Ltd., a Chinese company 0//2//Micro (Shanghai) Co. Ltd., a Chinese company