Exhibit 12 UNISYS CORPORATION COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES (UNAUDITED) ($ in millions) Years Ended December 31 -------------------------------------------- 1998 1997 1996 1995 1994 ------- -------- ------- -------- ------ Income (loss) from continuing operations before income taxes $604.7 $(729.8) $ 86.7 $(781.1) $ 14.6 Add (deduct) share of loss (income) of associated companies (.3) 5.9 (4.9) 5.0 16.6 ------ ------- ------ ------- ------ Subtotal 604.4 (723.9) 81.8 (776.1) 31.2 ------ ------- ------ ------- ------ Interest expense 171.7 233.2 249.7 202.1 203.7 Amortization of debt issuance expenses 4.6 6.7 6.3 5.1 6.2 Portion of rental expense representative of interest 48.5 51.2 59.2 65.3 65.0 ------ ------- ------ ------- ------ Total Fixed Charges 224.8 291.1 315.2 272.5 274.9 ------ ------- ------ ------- ------ Earnings (loss) from continuing operations before income taxes and fixed charges $829.2 $(432.8) $397.0 $(503.6) $306.1 ====== ======= ====== ======= ====== Ratio of earnings to fixed charges 3.69 * 1.26 * 1.11 ====== ======= ====== ======= ====== * Earnings for the years ended December 31, 1997 and 1995 were inadequate to cover fixed charges by approximately $723.9 and $776.1 million, respectively.