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Preface vjj 1 Computer Costs and Performance
What Computers Do and How
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accounts payable accounts receivable analysis and/or applications programs applications software approach automation batch bits buyer bytes cash changes character printers components computerized contract cost data base data processing decision detail devices disk diskette documentation employees equipment error example expensive factors Figure functions going hardware implementation important improvement input input/output installation inventory invoice keyboard language line printer machine magnetic tape maintenance megabytes memory ment microcomputer mini minicomputer month negotiating on-line ongoing operating system organization output packages payroll performance perhaps peripherals platter player piano posting printers problem procedures production proposed punched punched cards purchase puter record reports response schedule service bureau small business computer small computer Software Maintenance specifications speed storage systems software terminals things tion transaction typical updated usually vendor