EXHIBIT 11
                                                                                                ----------


                          TEXAS INSTRUMENTS INCORPORATED AND SUBSIDIARIES
                      EARNINGS PER COMMON AND DILUTIVE POTENTIAL COMMON SHARE



                                                                         Years ended December 31             
                                                                ------------------------------------------   
                                                                        1998           1997           1996   
                                                                     -------        -------        -------
                                                                                          
Income (loss) from continuing operations 
    before extraordinary item (in millions)....................      $   407        $   302        $   (46)  
  Add: Interest, net of tax and profit sharing effect,
           on convertible debentures assumed converted.........           --             --             --   
                                                                     -------        -------        -------
Adjusted income (loss) from continuing operations
    before extraordinary item..................................          407            302            (46)
Discontinued operations: 
  Income from operations.......................................           --             52            109
  Gain on sale.................................................           --          1,473             --
Extraordinary item.............................................           --            (22)            --   
                                                                     -------        -------        -------   
Adjusted net income............................................      $   407        $ 1,805        $    63   
                                                                     =======        =======        =======   


Diluted earnings (loss) per common and dilutive potential 
  common share:
Weighted average common shares outstanding (in thousands)......      390,495        385,141        379,388   
  Weighted average dilutive potential common shares:
    Stock option and compensation plans........................       10,434          9,319             --   
    Convertible debentures.....................................           --          3,267             --   
                                                                     -------        -------        -------   
Weighted average common and dilutive potential common shares...      400,929        397,727        379,388   
                                                                     =======        =======        =======   

Diluted earnings (loss) per common share:
  Income (loss) from continuing operations
      before extraordinary item................................      $  1.02       $    .76        $  (.12)
  Discontinued operations:
    Income from operations.....................................           --            .13            .29
    Gain on sale...............................................           --           3.70             --
  Extraordinary item...........................................           --           (.05)            --
                                                                     -------        -------        -------   
  Net income...................................................      $  1.02        $  4.54        $   .17   
                                                                     =======        =======        =======   


Basic earnings (loss) per common share:
Weighted average common shares outstanding (in thousands)......      390,495        385,141        379,388   
                                                                     =======        =======        =======   

Basic earnings (loss) per common share:
  Income (loss) from continuing operations
      before extraordinary item................................      $  1.04        $   .78        $  (.12)
  Discontinued operations: 
    Income from operations.....................................           --            .14            .29
    Gain on sale...............................................           --           3.82             --
  Extraordinary item...........................................           --           (.05)            --
                                                                     -------        -------        -------   
  Net income...................................................      $  1.04        $  4.69     $      .17   
                                                                     =======        =======        =======   


The earnings per common share computation for 1996 excludes 4.8 million shares for
stock options/compensation plans and 5.0 million shares for convertible debentures
because their effect would have been antidilutive.