What should every software engineer know about software architecture?

!UML (all of them)
2.Flowchart (more for understanding a real world process of some kind; like a business process)
3.Data model including Bachman (if you don't need to at least understand your data, how it is stored versus a model, i.e., Bachman then you are doing it wrong and your schema could be simplistic)
This is 3 different examples

In 1973 was when graphical user interfaces (guis) pioneered.