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The Tool of the Twentieth Century
The Work of the Programmer
6 other sections not shown
ADDRESSFIELD IN MASTER ALGOL assembly language assigned basic block branch instruction called change of address characters clerk COBOL program compared compiler program computer memory contain control address current-renewal date data field data names data-processing system decision box disk end-of-file EQUAL example expiration date EXPIRATION-DATE fetch flow diagram FORTRAN GO TO statement GO TO STEP-6 identify label large number loop machine language machine-language instruction machine-language program magnetic tape master file master record memory area memory location NAME IN MASTER necessary NEW-SUBSCRIPTION operation performed PL/I problem procedure language procedure-language program procedure-language statements processing processor Program Loop program statement programming languages punch cards READ MASTER-FILE READ statement renewal notice routine sequence sequential shown in Fig specific storage unit subfields subroutine subscriber file subscription symbols tape unit time-sharing tion transaction file transaction key transaction record typical updated master updated-master file verb word WRITE UPDATED-MASTER written