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SW ARCHITECTURE (Some architecture https://www.cs.helsinki…

- - - - Most simple,
        BUT scales up poorly and has performance constraints
    - - Do the urgent task
      - Problem with shared resource
        when interrupt occur
    - - A queue is create to stored function pointers
      - The queue is usually shorted by priority
      - Main loop will check the queue and do the highest priority function
      - Problem: low priority function starvation
        SINCE function CANNOT be BLOCKED
        and SHARED RESOURCE problem
    - - Has the semaphore/mutex to solve shared resource problem