Exhibit 99.1

SMSC REPORTS 58% YEAR-OVER-YEAR  INCREASE IN SECOND QUARTER REVENUES,  INCLUDING
OASIS ACQUISITION

             Revenues and Earnings Exceed Company's Prior Estimates

Hauppauge,  NY - September 21, 2005 - SMSC (Nasdaq:  SMSC) today  announced that
revenues for the second  quarter  ended August 31, 2005 were $79.1  million,  an
increase of approximately  58% from last year's second quarter revenues of $50.2
million.  Approximately  half of the increase was  attributable to the March 30,
2005 acquisition of OASIS  SiliconSystems  Holding AG (OASIS), and the remainder
resulted from growth in SMSC's other product  lines.  Second quarter fiscal 2006
revenues included $1.1 million received with respect to shipments to a Taiwanese
distributor  in fiscal 2005,  which could not be  recognized  previously  due to
collectibility concerns.

Gross  profit  percentage  was 43.9% for the three months ended August 31, 2005,
compared to 47.6% for the year-earlier  quarter, and 47.0% for the quarter ended
May 31,  2005.  For  purposes  of this  discussion,  gross  profit is defined as
revenues minus cost of goods sold, before amortization of intangible assets. The
cost of the inventory  underlying the $1.1 million of revenues  referenced above
was written off in the fourth  quarter of fiscal  2005.  Therefore,  there is no
cost of good sold in the second  quarter  of fiscal  2006  associated  with that
revenue. Also, the gross profit percentage for the second quarter of fiscal 2006
reflects the impact of yield losses  aggregating $1.5 million related to certain
atypical  production  issues.  Those yields have now returned to expected levels
and gross profit improvement is expected in the third quarter of fiscal 2006.

Research and development  expenses for the quarter were $14.7 million,  compared
to  $11.2   million  in  the  year-ago   quarter,   and  selling,   general  and
administrative  expenses were $18.6  million,  compared to $11.9 million in last
year's second quarter.

The  year-over-year  increase  in costs  and  expenses  primarily  reflects  the
addition of OASIS and an expense provision of $5.7 million in the second quarter
of fiscal 2006 to adjust Stock  Appreciation  Rights (SARs) to market value as a
result of the  increase in SMSC's  stock  price  during the  quarter.  This SARs
provision  is included  within cost of goods sold ($0.4  million),  research and
development  expenses  ($1.4  million) and selling,  general and  administrative
expenses ($3.9 million).

All of the above  resulted in an  operating  loss of $0.1  million in the second
quarter, compared to operating income of $0.6 million a year ago. Net income was
breakeven in the second  quarter of fiscal 2006,  compared to $0.9  million,  or
$0.05 per share, in the second quarter of last year.

To provide  additional  insight  into its  underlying  operations,  SMSC is also
presenting a second  quarter  fiscal 2006  statement of operations on a non-GAAP
basis, excluding the aforementioned provision to adjust SARs to market value, as
well as the impact  from  non-cash  acquisition-related  charges,  comprised  of
amortization  of  acquired  intangible  assets and  adjustments  to the value of
opening  inventory  at the date of the  OASIS  acquisition.  This  statement  is
presented in a format that  reconciles  the non-GAAP  measures to the comparable
GAAP measures.

On a non-GAAP basis,  operating results were as follows: Gross profit percentage
for the  period was  45.6%,  compared  to 47.6% in the  previous  year's  second
quarter.  Operating income was $8.1 million,  or 10.3% of revenues,  compared to
$0.8 million, or 1.6% of revenues,  in the year-ago period.  Non-GAAP net income
was $5.3 million, or $0.25 per share, compared to net income of $1.1 million, or
$0.06 per share, in the second quarter of fiscal 2005.

"Second  quarter  revenues  showed growth across all of our product areas," said
Steven J. Bilodeau,  Chairman and Chief Executive Officer. "Non-PC related sales
represented  51% of total sales in the second  quarter,  with 33% shipping  into
consumer  electronics  and  automotive  infotainment  applications  and  18%  in
industrial and other. Shipments into mobile and desktop PCs totaled 49% of sales
with mobile exceeding desktop shipments for the second quarter in a row."

Mr. Bilodeau continued,  "We are also pleased to have achieved our target of 10%
operating  income as a percentage of revenues at a $300 million annual run rate,
as SMSC  delivered  a 10.3%  operating  income  margin on a non-GAAP  basis this
quarter.  Going forward, as revenues increase,  we expect the continued leverage
of  operating  expenses  to  further  improve  operating  margins.  Our  current
expectation  is that  the  third  quarter  will be  another  quarter  of  robust
year-over-year growth in revenues and earnings as outlined herein."

Cash and liquid investments at August 31, 2005 were $131.7 million,  compared to
$121.0 million at May 31, 2005. The Company has no bank debt, and book value per
share was $14.61 as of August 31, 2005.

Non-GAAP Business Outlook:

Third quarter guidance for non-GAAP net income,  which is expected to be between
$0.31 and $0.37 per share,  assuming  approximately  23 million diluted weighted
average  shares  outstanding,  is presented  only on a non-GAAP basis because of
SMSC's inability to project its future stock price and any resultant  adjustment
that might be required to adjust SARs to market value.

For the third  quarter,  in line with the non-GAAP net income per share guidance
above, SMSC expects the following on a non-GAAP basis:

o  Revenues of between $81 million and $86 million,  reflecting a year-over-year
   increase  of more than 60% at the  midpoint of that  range.  Of that  growth,
   approximately  28% results from the OASIS acquisition and 32% is attributable
   to SMSC's pre-existing business.
o  Gross profit percentage of between 46% and 48%.
o  Research and development expenses of between $13.5 million and $14.5 million.
o  Selling,  general and administrative  expenses of between $14 million and $15
   million.
o  An effective income tax rate of approximately 31%.

The non-GAAP third quarter guidance above excludes the impact of (a) any charges
or  credits  that  might  be  required  relative  to SARs  and (b) two  non-cash
acquisition  related charges,  which are the amortization of acquired intangible
assets, estimated to be $1.6 million, and an adjustment to cost of goods sold to
reflect  the  write  up of the  cost  of  inventory  at the  date  of the  OASIS
acquisition, which is estimated to be $0.1 million.

SMSC currently has approximately 1.5 million SARs outstanding, none of which are
vested,  but all of which  are  scheduled  to vest  between  September  2005 and
September 2010.

In  GAAP  results,  expense  recognition  related  to SARs  is  determined  by a
mark-to-market  calculation  based  on  SMSC's  stock  price  at the end of each
period.  The SARs  outstanding  as of August  31,  2005 have been  marked to the
actual  market  price of $26.05 on that date.  If the market price of SMSC stock
remained at $26.05 on November 30, 2005, an expense  provision of  approximately
$1.0 million ($0.7 million,  or $0.03 per share, after tax) would be required in
the third quarter due to the passage of  additional  vesting time related to the
SARs.  Each  $1.00  change in SMSC's  share  price  above or below  $26.05 as of
November 30, 2005 would  require an  additional  expense  provision or credit of
approximately $0.75 million ($0.5 million, or $0.02 per share, after tax) in the
third  quarter,  with any  credit  limited to a maximum  of $5.7  million  ($3.9
million, or $0.17 per share, after tax).

SMSC  includes  the  actual  cash cost of SARs in  non-GAAP  results as SARs are
exercised. However, the non-GAAP guidance above includes no estimate of any cash
cost that might be  incurred in the third  quarter of fiscal 2006  because it is
impossible  to predict  the number of SARs that may be  exercised  or the market
value of SMSC stock at the time any exercise.

About SMSC:

Many of the world's most successful global  technology  companies rely upon SMSC
as a go-to resource for semiconductor system solutions that span analog, digital
and mixed-signal  technologies.  Leveraging  substantial  intellectual property,
integration  expertise and a comprehensive  global  infrastructure,  SMSC solves
design  challenges  and delivers  performance,  space,  cost and  time-to-market
advantages  to its  customers.  SMSC's  application  focus  targets key vertical
markets  including  mobile  and  desktop  PCs,  servers,  consumer  electronics,
automotive infotainment and industrial  applications.  The Company has developed
leadership  positions in its select  markets by providing  application  specific
solutions such as mixed-signal PC system controllers,  non-PCI Ethernet, ARCNET,
MOST, Hi-Speed USB and other high-speed serial communications.

SMSC is headquartered  in Hauppauge,  New York with operations in North America,
Taiwan,  Japan, Korea, China and Europe.  Engineering design centers are located
in Arizona, New York, Texas and Karlsruhe,  Germany.  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 or distributors,  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,  as well as general  industry and
market  conditions.  Reductions  in the  rate  of  growth  of the  PC,  consumer
electronics, embedded or automotive 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
Phone: 631-435-6626
Fax: 631-273-5550
carolynne.borders@smsc.com

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




                                                                          Three Months Ended August 31,
                                              --------------------------------------------------------------------------------------
                                                                 2005                                         2004
                                              ------------------------------------------    ----------------------------------------

                                                GAAP         Adjustment       Non-GAAP        GAAP         Adjustment     Non-GAAP

                                                                                                      

Revenues                                     $   79,060   $       -         $    79,060    $   50,157   $       -       $    50,157

Costs and expenses:
 Cost of goods sold                              44,372        (1,354)(a)        43,018        26,260           -            26,260
 Research and development                        14,685        (1,429)(b)        13,256        11,220           -            11,220
 Selling, general and administrative             18,554        (3,893)(b)        14,661        11,852           -            11,852
 Amortization of intangible assets                1,557        (1,557)(c)           -             266          (266)(c)         -
- ------------------------------------------------------------------------------------------------------------------------------------

Income (loss) from operations                      (108)        8,233             8,125           559           266             825

Interest income                                     649             -               649           556           -               556
Other income (expense), net                          (5)            -                (5)           (6)          -                (6)
- ------------------------------------------------------------------------------------------------------------------------------------

Income before provision for income taxes            536         8,233             8,769         1,109           266           1,375

Provision for income taxes                          517         2,954 (d)         3,471           214            96 (d)         310
- ------------------------------------------------------------------------------------------------------------------------------------

Net income                                           19         5,279             5,298           895           170           1,065
====================================================================================================================================


Basic net income per share                   $      -                       $      0.26    $     0.05                   $      0.06
====================================================================================================================================

Diluted net income per share                 $      -                       $      0.25    $     0.05                   $      0.06
====================================================================================================================================

Weighted average common shares outstanding:
 Basic                                           20,630                          20,630        18,308                        18,308
 Diluted                                         21,611                          21,611        19,169                        19,169




Notes:
SMSC uses certain  non-GAAP  information  to evaluate its operating  results and
believes such information also provides  investors with additional  insight into
its underlying operations.  This schedule presents a full reconciliation between
GAAP and non-GAAP results.

(a)  The  adjustment to Cost of goods sold includes $974 to remove the impact of
     writing up the cost of inventory at the date of the OASIS  acquisition over
     OASIS' original cost of the inventory.  That write up will only impact GAAP
     Cost of goods sold for the  turnover  period of the OASIS  inventory at the
     date of  acquisition.  That turnover  period is expected to conclude in the
     quarter ending November 30, 2005.

     The remaining $380 adjustment to Cost of goods sold is to remove the impact
     of the provision to adjust Stock Appreciation Rights (SARs) to market value
     as a result of the  increase  in SMSC's  stock price in the  quarter.  SMSC
     includes  the actual cash cost of SARs in non-GAAP  results as the SARs are
     exercised. No SARs had become exercisable through August 31, 2005.

(b)  The  adjustments  to  Research  &  development   and  Selling,   general  &
     administrative  expense are to remove the impact of the provision to adjust
     Stock  Appreciation  Rights  (SARs)  to  market  value as a  result  of the
     increase in SMSC's  stock price in the  quarter.  SMSC  includes the actual
     cash cost of SARs in non-GAAP  results as the SARs are  exercised.  No SARs
     had become exercisable through August 31, 2005.

(c)  The adjustment to  Amortization  of intangible  assets for the three months
     ended August 31, 2005 includes $1,291 related to the OASIS  acquisition and
     $266 related to the fiscal 2003 acquisition of Gain Technology  Corporation
     (Gain).  The  adjustment for the three months ended August 31, 2004 relates
     entirely to the Gain acquisition.

(d)  The  adjustments  to the  Provision  for income  taxes were  determined  by
     applying the appropriate incremental tax rates to the adjustments described
     in notes (a) through (c) above.


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




                                                                          Three Months Ended August 31,
                                              --------------------------------------------------------------------------------------
                                                                 2005                                         2004
                                              ------------------------------------------    ----------------------------------------

                                                GAAP         Adjustment       Non-GAAP        GAAP         Adjustment     Non-GAAP

                                                                                                      

Revenues                                     $   79,060   $       -         $    79,060    $   50,157   $       -       $    50,157

Costs and expenses:
 Cost of goods sold                              44,372        (1,354)(a)        43,018        26,260           -            26,260
 Research and development                        14,685        (1,429)(b)        13,256        11,220           -            11,220
 Selling, general and administrative             18,554        (3,893)(b)        14,661        11,852           -            11,852
 Amortization of intangible assets                1,557        (1,557)(c)           -             266          (266)(c)         -
- ------------------------------------------------------------------------------------------------------------------------------------

Income (loss) from operations                      (108)        8,233             8,125           559           266             825

Interest income                                     649             -               649           556           -               556
Other income (expense), net                          (5)            -                (5)           (6)          -                (6)
- ------------------------------------------------------------------------------------------------------------------------------------

Income before provision for income taxes            536         8,233             8,769         1,109           266           1,375

Provision for income taxes                          517         2,954 (d)         3,471           214            96 (d)         310
- ------------------------------------------------------------------------------------------------------------------------------------

Net income                                           19         5,279             5,298           895           170           1,065
====================================================================================================================================


Basic net income per share                   $      -                       $      0.26    $     0.05                   $      0.06
====================================================================================================================================

Diluted net income per share                 $      -                       $      0.25    $     0.05                   $      0.06
====================================================================================================================================

Weighted average common shares outstanding:
 Basic                                           20,630                          20,630        18,308                        18,308
 Diluted                                         21,611                          21,611        19,169                        19,169




Notes:
SMSC uses certain  non-GAAP  information  to evaluate its operating  results and
believes such information also provides  investors with additional  insight into
its underlying operations.  This schedule presents a full reconciliation between
GAAP and non-GAAP results.

(a)  The  adjustment to Cost of goods sold includes $974 to remove the impact of
     writing up the cost of inventory at the date of the OASIS  acquisition over
     OASIS' original cost of the inventory.  That write up will only impact GAAP
     Cost of goods sold for the  turnover  period of the OASIS  inventory at the
     date of  acquisition.  That turnover  period is expected to conclude in the
     quarter ending November 30, 2005.

     The remaining $380 adjustment to Cost of goods sold is to remove the impact
     of the provision to adjust Stock Appreciation Rights (SARs) to market value
     as a result of the  increase  in SMSC's  stock price in the  quarter.  SMSC
     includes  the actual cash cost of SARs in non-GAAP  results as the SARs are
     exercised. No SARs had become exercisable through August 31, 2005.

(b)  The  adjustments  to  Research  &  development   and  Selling,   general  &
     administrative  expense are to remove the impact of the provision to adjust
     Stock  Appreciation  Rights  (SARs)  to  market  value as a  result  of the
     increase in SMSC's  stock price in the  quarter.  SMSC  includes the actual
     cash cost of SARs in non-GAAP  results as the SARs are  exercised.  No SARs
     had become exercisable through August 31, 2005.

(c)  The adjustment to  Amortization  of intangible  assets for the three months
     ended August 31, 2005 includes $1,291 related to the OASIS  acquisition and
     $266 related to the fiscal 2003 acquisition of Gain Technology  Corporation
     (Gain).  The  adjustment for the three months ended August 31, 2004 relates
     entirely to the Gain acquisition.

(d)  The  adjustments  to the  Provision  for income  taxes were  determined  by
     applying the appropriate incremental tax rates to the adjustments described
     in notes (a) through (c) above.


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




                                                                       Six Months Ended August 31,
                                            -----------------------------------------------------------------------------------
                                                              2005                                      2004
                                            ----------------------------------------    ---------------------------------------
                                               GAAP        Adjustment     Non-GAAP         GAAP       Adjustment     Non-GAAP

                                                                                                  

Revenues                                   $  147,867    $       -      $   147,867    $  103,210    $      -       $  103,210

Costs and expenses:
 Cost of goods sold                            80,864        (1,959)(a)      78,905        52,645           -           52,645
 Research and development                      27,651        (1,397)(b)      26,254        22,082           -           22,082
 Selling, general and administrative           32,145        (3,808)(b)      28,337        23,704           -           23,704
 Amortization of intangible assets              2,710        (2,710)(d)         -             583          (583)(d)        -
 In-process research and development              895          (895)(c)         -             -                            -
- -------------------------------------------------------------------------------------------------------------------------------

Income from operations                          3,602        10,769          14,371         4,196          583           4,779

Interest income                                 1,372           -             1,372         1,022          -             1,022
Other income (expense), net                       (52)          -               (52)          (38)         -               (38)
- -------------------------------------------------------------------------------------------------------------------------------

Income before provision for income taxes        4,922        10,769          15,691         5,180          583           5,763

Provision for income taxes                      1,876         3,908 (e)       5,784         1,373          210  (e)      1,583
- -------------------------------------------------------------------------------------------------------------------------------

Net income                                      3,046         6,861           9,907         3,807          373           4,180
===============================================================================================================================


Basic net income per share                       0.15                   $      0.49    $     0.21                   $     0.23
===============================================================================================================================

Diluted net income per share               $     0.14                   $      0.47    $     0.20                   $     0.21
===============================================================================================================================

Weighted average common shares outstanding:
 Basic                                         20,325                        20,325        18,278                       18,278
 Diluted                                       21,071                        21,071        19,482                       19,482




Notes:
SMSC uses certain  non-GAAP  information  to evaluate its operating  results and
believes such information also provides  investors with additional  insight into
its underlying operations.  This schedule presents a full reconciliation between
GAAP and non-GAAP results.

(a)  The  adjustment to Cost of goods sold includes  $1,587 to remove the impact
     of writing up the cost of  inventory  at the date of the OASIS  acquisition
     over OASIS' original cost of the inventory.  That write up will only impact
     GAAP Cost of goods sold for the turnover  period of the OASIS  inventory at
     the date of  acquisition.  That turnover  period is expected to conclude in
     the quarter ending November 30, 2005.

     The remaining $372 adjustment to Cost of goods sold is to remove the impact
     of the provision to adjust Stock Appreciation Rights (SARs) to market value
     as a result of the  increase  in SMSC's  stock price in the  quarter.  SMSC
     includes  the actual cash cost of SARs in non-GAAP  results as the SARs are
     exercised. No SARs had become exercisable through August 31, 2005.

(b)  The  adjustments  to  Research  &  development   and  Selling,   general  &
     administrative  expense are to remove the impact of the provision to adjust
     Stock  Appreciation  Rights  (SARs)  to  market  value as a  result  of the
     increase in SMSC's  stock price in the  quarter.  SMSC  includes the actual
     cash cost of SARs in non-GAAP  results as the SARs are  exercised.  No SARs
     had become exercisable through August 31, 2005.

(c)  The adjustment to In-process research and development is to remove from the
     pro forma results the cost of in-process  research and development that was
     purchased in the OASIS acquisition and immediately expensed.

(d)  The  adjustment to  Amortization  of  intangible  assets for the six months
     ended August 31, 2005 includes $2,178 related to the OASIS  acquisition and
     $532 related to the fiscal 2003 acquisition of Gain Technology  Corporation
     (Gain).  The  adjustment  for the six months  ended August 31, 2004 relates
     entirely to the Gain acquisition.

(e)  The  adjustments  to the  Provision  for income  taxes were  determined  by
     applying the appropriate incremental tax rates to the adjustments described
     in notes (a) through (d) above.


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



                                            August 31,          February 28,
                                               2005                 2005
                                         ---------------      ---------------
Assets
Current assets:
 Cash and cash equivalents              $       24,678       $      116,126
 Short-term investments                        106,988               56,519
 Accounts receivable, net                       29,109               23,788
 Inventories                                    38,818               33,310
 Deferred income taxes                          16,612               17,701
 Other current assets                            4,794                4,295
- -----------------------------------------------------------------------------

   Total current assets                        220,999              251,739
- -----------------------------------------------------------------------------

Property, plant and equipment, net              28,915               22,630
Goodwill                                        79,032               29,435
Intangible assets, net                          48,152                3,584
Deferred income taxes                            9,456                7,163
Other assets                                     3,864                4,708
- -----------------------------------------------------------------------------

                                        $      390,418       $      319,259
=============================================================================

Liabilities and shareholders' equity
Current liabilities:
 Accounts payable                       $       22,216       $       15,995
 Deferred income on shipments to
 distributors                                    8,876                7,689
 Accrued expenses, income taxes and
 other liabilities                              21,574               13,400
- -----------------------------------------------------------------------------

   Total current liabilities                    52,666               37,084
- -----------------------------------------------------------------------------

Deferred income taxes                           16,116                  -
Other liabilities                               15,429               12,326

Shareholders' equity:
 Preferred stock                                   -                    -
 Common stock                                    2,295                2,053
 Additional paid-in capital                    229,340              187,854
 Retained earnings                             103,658              100,612
 Treasury stock, at cost                       (25,961)             (23,799)
 Deferred stock-based compensation              (3,588)              (1,925)
 Accumulated other comprehensive
 income                                            463                5,054
- -----------------------------------------------------------------------------

   Total shareholders' equity                  306,207              269,849
- -----------------------------------------------------------------------------

                                        $      390,418       $      319,259
=============================================================================