History: Relationship between SE and other kinds of engineering

[amyjko]

When the article talks about Margaret Hamilton's contribution and leadership in the field of software engineering, it says that Margaret Hamilton's leadership established the software engineering field as a core part of systems engineering. I think it will be better the Arthur could explain more about the term "systems engineering". What's the meaning of systems engineering? What's the background information about systems engineering? And I am a little bit confused about the relationship between systems engineering and software engineering. How software engineering becomes a core part of systems engineering? What's the intrinsic relationship between them?