A code for non-numeric information processing applications in online systems
Communications of the ACM
Application of level changing to a multilevel storage organization
Communications of the ACM
Software compatibility: what was promised, what we have, what we need
AFIPS '68 (Fall, part I) Proceedings of the December 9-11, 1968, fall joint computer conference, part I
The transferability of computer programs and the data on which they operate
AFIPS '69 (Spring) Proceedings of the May 14-16, 1969, spring joint computer conference
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The fundamental goal of an evolutionary approach to upgrading a computer installation is the maintenance of a continuity of operation as various elements of the installation (equipment components and system support programs) are replaced. The realization of this goal requires the isolation and separation of the inter-dependencies which now exist between the various elements of a computer installation. This includes the inter-dependencies between programs and the characteristics of equipment components, between programs and the characteristics of other programs, and between equipment components and the characteristics of other equipment components.