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DAHL - BREAKTHROUGHS

The Seventies

Descriptions of concepts

 

Overview about the seventies

 

The seventies are the years of ‘purifying post-war times’ in computing science, especially in software. People in the computer industry were gradually growing aware of the fact that software can be very ‘hard’. There are good reasons to assume that IBM lost its absolute dominance in the computer market due to the inability of its management to realize this in time. Programming was turning into a problem rather than a solution. In 1975 Frederick P. Brooks, the manager of OS/360, a 5000 man-years project at IBM, published his ‘Mythical Man-Month’ in which he illustrated a number of difficulties of software development, concluding with his famous statement: “Adding manpower to a late software project makes it later.“ Interest was growing in methods which could guarantee that software was really doing what it was meant to. As Dijkstra later wrote looking back on the period: “I called the seventies the decade of semantics: the interest in syntax and parsing tapered off, Dana Scott’s denotational semantics provided the logical foundation for recursion in all its glory, and formal proofs of program correctness entered the picture.” (Dijkstra, 1988a)

Descriptions of concepts

     
       

Dahl's Work - Structured programming

 

 

 

Topics for stage: The Seventies of Dahl

Topics Documents
Object-Orientation The development of the Simula Language (application/pdf)
Programming Languages The development of the Simula Language (application/pdf)
Simula The development of the Simula Language (application/pdf)

 

 

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