Exhibit 12 UNISYS CORPORATION COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES (UNAUDITED) ($ in millions) Years Ended December 31 --------------------------------------- 1997 1996 1995 1994 1993 ---- ---- ---- ---- ---- Income (loss) from continuing operations before income taxes $(758.8) $ 93.7 $(781.1) $ 14.6 $370.9 Add (deduct) share of loss (income) of associated companies 5.9 (4.9) 5.0 16.6 14.5 ------- ------ ------ ------ ------ Subtotal (752.9) 88.8 (776.1) 31.2 385.4 ------- ------ ------ ------ ------ Interest expense (net of interest capitalized) 233.2 249.7 202.1 203.7 241.7 Amortization of debt issuance expenses 6.7 6.3 5.1 6.2 6.6 Portion of rental expense representative of interest 57.2 59.2 65.3 65.0 70.5 ------- ------- ------ ------ ------ Total Fixed Charges 297.1 315.2 272.5 274.9 318.8 ------- ------- ------ ------ ------ Earnings (loss) from continuing operations before income taxes and fixed charges $(455.8) $404.0 $(503.6) $306.1 $704.2 ======= ======= ======= ====== ====== Ratio of earnings to fixed charges * 1.28 * 1.11 2.21 ======= ======= ======= ====== ====== * Earnings for the years ended December 31, 1997 and 1995 were inadequate to cover fixed charges by approximately $752.9 million and $776.1 million, respectively.