the main question is:

Describe a system of your choice. What is the input? The output? The boundary? The components? Their interrelationships? The constraints? The purpose? The interfaces? The environment? Draw a diagram of this system.

I solved it but my doctor said "The system components need to represent functions of the system and as a result you can demonstrate interrelationships between these components."

I didn't understand what he actually meant by it

this is my answer to the main question and i don't know what missing