Exhibit 12 UNISYS CORPORATION COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES (UNAUDITED) ($ in millions) Nine Months Ended Years Ended December 31 Sept 30, ------------------------------------- 1999 1998 1997 1996 1995 1994 ------- ---- ---- ---- ---- ---- Income (loss) from continuing operations before income taxes $548.3 $594.2 $(748.1) $ 80.2 $(786.0) $ 17.4 Add (deduct) share of loss (income) of associated companies 14.2 ( .3) 5.9 (4.9) 5.0 16.6 ------ ------ ------ ------ ------ ------ Subtotal 562.5 593.9 (742.2) 75.3 (781.0) 34.0 ------ ------ ------ ------ ------ ------ Interest expense 103.0 171.7 233.2 249.7 202.1 203.7 Amortization of debt issuance expenses 3.1 4.6 6.7 6.3 5.1 6.2 Portion of rental expense representative of interest 36.8 49.1 51.8 59.8 65.9 65.6 ------ ------ ------- ------ ------ ------ Total Fixed Charges 142.9 225.4 291.7 315.8 273.1 275.5 ------ ------ ------- ------ ------ ------ Earnings (loss) from continuing operations before income taxes and fixed charges $705.4 $819.3 $(450.5) $391.1 $(507.9) $309.5 ====== ====== ======= ====== ======= ====== Ratio of earnings to fixed charges 4.94 3.63 (a) 1.24 (a) 1.12 ====== ====== ======= ====== ====== ====== (a) Earnings for the years ended December 31, 1997 and 1995 were inadequate to cover fixed charges by approximately $742.2 and $781.0 million, respectively.