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Systems engineering as an approach and methodology grew in response to — Tom DeMarco

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"Systems engineering as an approach and methodology grew in response to the increase size and complexity of systems and projects... This engineering approach to the management of complexity by modularization was re-deployed in the software engineering discipline in the 1960s and 1970s with a proliferation of structured methodologies that enabled the the analysis, design and development of information systems by using techniques for modularized description, design and development of system components. Yourdon and DeMarcos Structured Analysis and Design, SSADM, James Martins Information Engineering, and Jacksons Structured Design and Programming are examples from this era. They all exploited modularization to enable the parallel development of data, process, functionality and performance components of large software systems. The development of object orientation in the 1990s exploited modularization to develop reusable software. The idea was to develop modules that could be mixed and matched like Lego bricks to deliver to a variety of whole system specifications. The modularization and reusability principles have stood the test of time and are at the heart of modern software development."
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Tom DeMarco
Tom DeMarco
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Tom DeMarco is an American software engineer, author, and consultant on software engineering topics. He was an early developer of structured analysis in the 1970s.

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