Long, Larry E. Computers : information technology in perspective / Larry Long, Nancy Long. - 9th ed. - Upper Saddle River, NJ : Prentice Hall, c2001. - 1 v. (various pagings) : ill. (some col.) ; 28 cm. Includes index. ISBN: 0130929808 : Subjects--Topical Terms: Computers.Electronic data processing. LC Class. No.: QA76 / .L576 2001