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applications BASIC batch binary numbers bits called central processing unit characters COBOL computer professionals computer system computerized cost Courtesy CP/M data base data communications data entry data processing decimal number device digits display EBCDIC electronic entered errors example executed field Figure floppy disk flowchart FORTRAN function hardware hexadecimal illustrates indicate information processing information systems input unit instructions job control language keyboard line number logic machine magnetic tape mainframe McKing's memory messages microcomputers micros minicomputer minis numbering system octal on-line operating system optical organization output payroll performed position primary storage PRINT printer problems procedures programming language pseudocode punched card puter record reports result Self-Evaluating Quiz source document specific statement storage stored structured programming symbols systems analyst techniques telephone terminal transmission transmitted typically update vendors word processing