Exhibit 99.1
                 SMSC REPORTS SECOND QUARTER FISCAL 2005 RESULTS

Hauppauge,  NY - September 20, 2004 - SMSC (Nasdaq:  SMSC) today  announced that
revenues for the second  quarter  ended August 31, 2004 were $50.2  million,  in
line with the Company's estimate announced on August 17, 2004, and approximately
4% higher than revenues of $48.3 million in the second quarter of fiscal 2004.

Gross profit  percentage on total  revenues was 47.6% for the second  quarter of
fiscal 2005,  compared to 44.5% in the previous  year's  second  quarter.  Gross
profit  percentage on product  sales was 44.4% in this year's second  quarter as
compared to 44.2% a year ago.

Research and  development  expenses for the second  quarter were $11.2  million,
compared to $9.3  million in the  year-ago  quarter,  and  selling,  general and
administrative  expenses were $11.9  million,  compared to $10.0 million in last
year's  second  quarter.  The  year-over-year  increases in  operating  expenses
primarily reflect  investments in engineering and marketing personnel to support
future  revenue  growth,  litigation  costs and  tooling  costs for new  product
developments.

Operating  income in the  second  quarter  of fiscal  2005 was $0.6  million  as
compared to $1.9 million in the year-ago  period.  Second quarter net income was
$0.9 million, or $0.05 per share,  compared to $1.5 million, or $0.08 per share,
in the second quarter of fiscal 2004.

Cash and liquid investments at August 31, 2004 were $182.0 million,  an increase
of $12.3 million from $169.7 million at May 31, 2004. Tax refunds  totaling $6.9
million  contributed  to the  increase  in cash and  liquid  investments  in the
quarter.  Inventories  at August  31,  2004  totaled  $27.8  million  and remain
appropriate  relative to expected demand. The Company has no bank debt, and book
value per share was $14.47 as of August 31, 2004.

"As announced on August 17th,  SMSC's second quarter  revenues were below normal
seasonal  patterns  resulting  from a  general  slowdown  in orders  across  our
businesses,   particularly  in  PC  I/O  products,  as  ODMs  rebalanced  excess
inventories,"  said Steven J. Bilodeau,  Chairman and Chief  Executive  Officer.
"However,  based on current  customer  demand,  we expect third quarter  product
revenues to show sequential growth."

Mr. Bilodeau added,  "Looking at second quarter revenues  compared to last year,
networking and connectivity products produced strong growth of over 50% and 80%,
respectively.  In addition,  non-PC I/O revenues contributed 41% of total second
quarter  product sales, as SMSC continues to execute on its goal of diversifying
its product portfolio.

"During the second quarter,  SMSC introduced two 'industry  first' products with
its USB2.0 2-port hub for portable and integrated  applications,  as well as its
suite of integrated industrial-temperature embedded I/O controllers. Also, early
in September,  SMSC announced a comprehensive  line of USB2.0 hubs,  USB2.0 card
reader,  USB2.0 PHY,  mobile super I/O and embedded  ethernet  controllers for a
wide range of consumer and commercial connectivity solutions.  Our commitment to
driving product innovation,  as evidenced in these recent introductions,  should
serve  us well in our  diversification  goal as we  target  a  broader  range of
markets."

Business Outlook:

For the third  quarter of fiscal 2005,  SMSC expects  revenues to be between $54
million  and $57  million,  representing  a  sequential  increase in revenues of
approximately  11%, at the midpoint of that range.  Gross profit  percentage  is
expected to be between 45% and 46%,  reflective  of product mix and a slowing of
cost reductions due to tightened  supply  constraints.  Research and development
expenses  are  expected  to be between  $10.5  million  and $11.5  million,  and
selling,  general and  administrative  expenses  are  expected to be between $11
million and $12 million.  Amortization of acquired intangibles is expected to be
approximately  $0.3  million.  Due  to  higher  interest  income  caused  by the
increased  cash  balance  and a change  in the mix of  taxable  and  non-taxable
investments,  interest income is expected to be approximately $0.7 million.  The
effective  tax rate is  estimated  to be between  26% and 27%,  and the  Company
expects third quarter net income to be between $0.10 and $0.14 per share.

About SMSC:

Many of the world's most successful global  technology  companies rely upon SMSC
as a go-to resource for integrated  circuits and semiconductor  system solutions
that span analog, digital and mixed-signal technologies.  SMSC delivers products
that solve the  challenges  of space,  cost and  time-to-market  for  high-speed
computing, connectivity and embedded networking applications.

SMSC  addresses  computing,  communications  and  consumer  electronics  markets
through  leading  positions  in  Input/Output  and  non-PCI  Ethernet  products;
innovations in USB 2.0 and other  high-speed  serial  solutions;  and integrated
networking  products  employed  in a broad  range  of  applications.  Leveraging
substantial  intellectual  property and a comprehensive  global  infrastructure,
SMSC  thrives at the  intersection  of  silicon,  software  and  customized  OEM
applications.

SMSC is based in Hauppauge, New York with operations in North America, Taiwan,
Japan, Korea, China and Europe. Engineering design centers are located in
Arizona, New York and Texas. Additional information is available at
www.smsc.com.

Forward Looking Statements:

Except for historical  information  contained  herein,  the matters discussed in
this  announcement are  forward-looking  statements about expected future events
and financial and operating results that involve risks and uncertainties.  These
include the timely development and market acceptance of new products; the impact
of competitive  products and pricing; the effect of changing economic conditions
in domestic  and  international  markets;  changes in customer  order  patterns,
including loss of key customers,  order  cancellations or reduced bookings;  and
excess or obsolete  inventory  and  variations  in  inventory  valuation,  among
others.  Such  statements  are qualified in their entirety by the inherent risks
and  uncertainties  surrounding  future  expectations  and may not  reflect  the
potential impact of any future acquisitions, mergers or divestitures.

SMSC  competes  in the  semiconductor  industry,  which  has  historically  been
characterized  by intense  competition,  rapid  technological  change,  cyclical
market patterns,  price erosion and periods of mismatched  supply and demand. In
addition,  sales of many of the Company's  products  depend  largely on sales of
personal computers and peripheral devices,  and reductions in the rate of growth
of the PC, consumer  electronics and embedded markets could adversely affect its
operating  results.  SMSC  conducts  business  outside the United  States and is
subject to tariff and import  regulations and currency  fluctuations,  which may
have an effect on its business. All forward-looking  statements speak only as of
the date  hereof and are based upon the  information  available  to SMSC at this
time. Such information is subject to change, and the Company may not necessarily
inform,  or be required to inform,  investors of such  changes.  These and other
risks and uncertainties, including potential liability resulting from pending or
future litigation, are detailed from time to time in the Company's reports filed
with the SEC.  Investors are advised to read the Company's Annual Report on Form
10-K and quarterly  reports on Form 10-Q filed with the  Securities and Exchange
Commission,  particularly those sections entitled "Other Factors That May Affect
Future  Operating  Results" for a more  complete  discussion  of these and other
risks and uncertainties.

SMSC is a registered  trademark of Standard  Microsystems  Corporation.  Product
names and company names are trademarks of their respective holders.

Contact:
Carolynne Borders
Director of Corporate Communications
SMSC
Voice: 631-435-6626
Fax: 631-273-5550
carolynne.borders@smsc.com

               STANDARD MICROSYSTEMS CORPORATION AND SUBSIDIARIES
                CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited)
                    (In thousands, except per share amounts)




                                                               Three Months Ended                       Six Months Ended
                                                                    August 31,                             August 31,
                                                        ---------------------------------     -----------------------------------

                                                             2004               2003              2004               2003
                                                             ----               ----              ----               ----
                                                                                                   
Sales and revenues:
Product sales                                          $       47,233     $       47,961    $       97,585     $       90,449
Intellectual property revenues                                  2,924                328             5,625                561
- ---------------------------------------------------------------------------------------------------------------------------------
                                                               50,157             48,289           103,210             91,010

Cost of goods sold                                             26,260             26,783            52,645             48,842
- ---------------------------------------------------------------------------------------------------------------------------------

Gross profit                                                   23,897             21,506            50,565             42,168

Operating expenses (income):
Research and development                                       11,220              9,280            22,082             18,381
Selling, general and administrative                            11,852              9,965            23,704             19,478
Amortization of intangible assets                                 266                317               583                677
Gains on real estate transactions                                   -                  -                 -             (1,444)
- ---------------------------------------------------------------------------------------------------------------------------------

Income from operations                                            559              1,944             4,196              5,076

Interest income                                                   556                391             1,022                834
Other expense, net                                                 (6)                (9)              (38)              (745)
- ---------------------------------------------------------------------------------------------------------------------------------

Income before provision for income taxes
  and minority interest                                         1,109              2,326             5,180              5,165

Provision for income taxes                                        214                785             1,373              1,680

Minority interest in net income of subsidiary                       -                 35                 -                 96
- ---------------------------------------------------------------------------------------------------------------------------------

Income from continuing operations                                 895              1,506             3,807              3,389

Loss from discontinued operations (net of income tax
  benefits of $14 and $106)                                         -                (26)                -               (190)
- ---------------------------------------------------------------------------------------------------------------------------------

Net income                                             $          895     $        1,480    $        3,807     $        3,199
=================================================================================================================================


Basic net income per share:
  Income from continuing operations                    $         0.05     $         0.09    $         0.21     $         0.20
  Loss from discontinued operations                                 -                  -                 -              (0.01)
- ---------------------------------------------------------------------------------------------------------------------------------

  Basic net income per share                           $         0.05     $         0.09    $         0.21     $         0.19
=================================================================================================================================

Diluted net income per share:
  Income from continuing operations                    $         0.05     $         0.08    $         0.20     $         0.19
  Loss from discontinued operations                                 -                  -                 -              (0.01)
- ---------------------------------------------------------------------------------------------------------------------------------

  Diluted net income per share                         $         0.05     $         0.08    $         0.20     $         0.18
=================================================================================================================================

Weighted average common shares outstanding:
  Basic                                                        18,308             16,863            18,278             16,830
  Diluted                                                      19,169             17,859            19,482             17,643


The sum of the income (loss) per share amounts may not total due to rounding.


               STANDARD MICROSYSTEMS CORPORATION AND SUBSIDIARIES
                     CONSOLIDATED BALANCE SHEETS (Unaudited)
                                 (in thousands)



                                                   August 31,   February 29,
                                                     2004          2004
                                                     ----          ----
Assets
Current assets:
  Cash and cash equivalents                       $ 159,524     $ 135,161
  Short-term investments                             13,835        23,136
  Accounts receivable, net                           27,747        21,946
  Inventories                                        27,849        23,162
  Deferred income taxes                              13,435        15,064
  Other current assets                                3,314         8,549
- --------------------------------------------------------------------------

       Total current assets                         245,704       227,018
- --------------------------------------------------------------------------

Property, plant and equipment, net                   24,299        23,430
Long-term investments                                 8,600        15,600
Goodwill                                             29,435        29,595
Intangible assets, net                                4,115         4,697
Deferred income taxes                                 6,784         6,493
Other assets                                          3,327         3,192
- --------------------------------------------------------------------------

                                                  $ 322,264     $ 310,025
==========================================================================

Liabilities and shareholders' equity
Current liabilities:
  Accounts payable                                $  19,022     $  14,679
  Deferred income on shipments to distributors       12,858         7,972
  Accrued expenses, income taxes and other
   liabilities                                       11,113        13,168
- --------------------------------------------------------------------------

        Total current liabilities                    42,993        35,819
- --------------------------------------------------------------------------

Other liabilities                                    12,143        12,104

Shareholders' equity:
  Preferred stock                                        -             -
  Common stock                                        2,030         2,019
  Additional paid-in capital                        184,023       181,830
  Retained earnings                                 102,817        99,010
  Treasury stock, at cost                           (23,799)      (23,454)
  Deferred stock-based compensation                  (2,573)       (1,962)
  Accumulated other comprehensive income              4,630         4,659
- --------------------------------------------------------------------------

        Total shareholders' equity                  267,128       262,102
- --------------------------------------------------------------------------

                                                  $ 322,264     $ 310,025
==========================================================================