Exhibit 99.1

National Reports Earnings for Second Quarter Fiscal 2005

News Media:                                Financial:
Jeff Weir                                  Jennifer Stratiff
National Semiconductor                     National Semiconductor
(408) 721-5199 or (408) 242-4827           (408) 721-5007
jeff.weir@nsc.com                          invest.group@nsc.com

National Semiconductor to Sell PC Super I/O Business


SANTA  CLARA,  CALIF.,  March  14,  2005 -  National  Semiconductor  Corporation
(NYSE:NSM) today announced that it has signed a definitive agreement to sell the
company's PC Super I/O  business to Winbond  Electronics  Corporation,  based in
Hsinchu  Science Park,  Taiwan,  R.O.C.  The sale is consistent  with National's
ongoing  program to maximize  resources  and support  for the  company's  analog
businesses.  Within  National,  this  business is referred to as the Advanced PC
division.

Pursuant to the agreement,  Winbond will acquire intellectual  property,  assets
and approximately 150 employees,  most of whom are based at National's  research
and design center in Herzlia,  Israel. The PC Super I/O business unit's flagship
products  include the  Safekeeper  Trusted I/O  desktop and  notebook  devices,
keyboard  controllers  and  Server  I/O  devices.  This  business  accounts  for
approximately 4 percent of National's current quarterly revenues.

"This sale benefits both companies," said Brian L. Halla,  National's  chairman,
president and CEO. "National is committed to focus on its core analog portfolio.
Winbond,  meanwhile, is well positioned to leverage our digital and mixed-signal
IP with their  established line of products for the computer,  laptop and server
markets."

"National's  Advanced PC division  will be a tremendous  addition to our company
and  accelerate our ability to deliver  high-end mixed signal,  I/O and advanced
system solutions to our customers," said Arthur Chiao, Chairman of Winbond.

The sale is expected to close during the fourth quarter of fiscal 2005.

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Special Note
This release contains forward-looking  statements dependent on a number of risks
and  uncertainties  pursuant  to the  safe  harbor  provisions  of  the  Private
Securities  Litigation  Reform Act of 1995.  These factors include,  but are not
restricted to, new orders received and shipped during the quarter, the degree of
factory utilization, the sale of inventories at existing prices, and the ramp up
of  recently  introduced  products.   Other risk  factors  are  included  in the
company's  10-K for the year ended May 30, 2004 (see  Outlook  and Risk  Factors
sections of  Management's  Discussion  and Analysis of Financial  Conditions and
Results of Operations) and the 10-Q for the quarter ended November 28, 2004.

About National Semiconductor
National  Semiconductor,  the industry's  premier analog  company,  creates high
performance  analog devices and  subsystems.  National's  leading-edge  products
include  power  management  circuits,  display  drivers,  audio and  operational
amplifiers,  communication  interface  products and data  conversion  solutions.
National's key markets include wireless handsets, displays, PCs and laptops. The
company's  analog  products are also  optimized for numerous  applications  in a
variety of electronics markets, including medical,  automotive,  industrial, and
test  and  measurement.  Headquartered  in  Santa  Clara,  California,  National
reported  sales of $1.98  billion for fiscal  2004,  which  ended May 30,  2004.
Additional company and product information is available at www.national.com.

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