Process flow design-system design-human-machine interface design
Process representation tools (key points)
Data flow diagram is also a kind of IPO diagram
NS diagram and PAD diagram
business process reengineering
Need to memorize basic principles
business process management
All four process representation tools are suitable for process design.
PAD: Structured
NS diagram is not suitable for designing complex processes
. Choice A
b
a
system design
It’s about traditional structured design
Summary design: module division of the system, relationships between modules
Detailed design: implementation details within the modules
Outline design output: system structure diagram, outline design specification
Detailed design output: detailed design specification
Others call me, fan in.
I call others, fan out.
Cohesion ranking
Frequently tested points
Coupling degree ranking
c
d
a
b
d
Many people call me because of the high degree of reuse.
Three principles of human-computer interface design
Put it under user control,
reduce user memory burden,
and maintain interface consistency.