Wednesday October 24, 5:30 am Eastern Time

Press Release

SOURCE: O2Micro

SANTA CLARA, Calif. & GEORGE TOWN, Grand Cayman (BUSINESS WIRE) Oct.

24, 2001--O2Micro International Limited (Nasdaq:OIIM - news), a leading

supplier of innovative power management ICs to mobile computer and

communications manufacturers, will announce its financial results for

the quarter ended September 30, 2001 after the market closes on

Wednesday, October 31, 2001.

The press release will be followed by a conference call at 2:00 p.m.

Pacific time. You may participate by dialing 800/360-9865 or 973/694-

6836. A replay of the call will be available by phone until November

7th by dialing 800/428-6051 or 973/709-2089, pass code No. 211816. A

live simulcast will also be available on the company website at

www.o2micro.com, and an online replay will be available on the site for

one week.

About O2Micro

Founded in March 1995, O2Micro designs, develops and markets innovative

power management and security components for mobile communication,

computer, information appliance, and LCD products. Products include

AudioDJ®, SmartCardBus® for secure on line e-commerce, LCD Backlight

Inverters and Battery Management IC's.

O2Micro maintains an extensive portfolio of intellectual property with

345 patent claims granted, and over 600 more pending. The company

maintains offices worldwide. Additional company and product information

can be found on the company website at www.o2micro.com.

Contact:

O2Micro

Gil Goodrich, 408/987-5920 x8013 (Dir. of IR)

gil.goodrich@o2micro.com