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analysis applications assembly language auxiliary storage backup basic batch processing binary bubble memory business data processing bytes Calculate capabilities central processing unit Cobol commonly compiler language components computer system concept control unit copy cost Courtesy data communication data entry data processing data processing needs data processing system database management system detailed digit distributed data processing electronic employee example EXERCISE flowchart Fortran functions handling hardware illustrated in Figure includes input installation instance instructions internal storage involves key field logic machine language magnetic disk magnetic tape manufacturer master file Master Record methods microcomputer minicomputer multiprogramming operating system output overall Payment payroll performed preparation printed printer problem programming language pseudocode purchase sales order schedule sequence sequential shown in Figure storage device stored structured programming techniques terminal timesharing tion transaction updated