Earnings Conference Call

Event Information

Earnings Conference Call Announcement

Fiscal Year 2008 Fourth-Quarter

Thursday, June 5, 2008

• 1:00 p.m. PST - Earnings press release issued
• 1:30 p.m. PST - Conference Call begins

Speakers:

Brian Halla, chairman and chief executive officer
Don Macleod, president and chief operating officer
Lewis Chew, chief financial officer
Mark Veeh, investor relations manager

Webcast Information

Participants may dial # (888) 434-6355
or (706) 902-0309

Live audio Webcast

• Dial-in replay available at 3:00 p.m. PST through June 12
• Replay: (800) 642-1687 or (706) 645-9291
• Replay dial-in pin: #39253155

• On Demand Webcast available at 2:00 p.m. PST through September 3, 2008
• ThomsonOne: www.thomsonone.com
• National Semiconductor: /analog/invest/conf