Function-oriented design is comprised of many smaller sub-systems is known as Functions - Program Writing

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• chanti   -Posted on 23 Oct 17
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• sami   -Posted on 29 May 17
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• Nirja Shah   -Posted on 16 Oct 15
  - In function-oriented design, the system is comprised of many smaller sub-systems known as functions.
  
  - The capability of these functions is to perform significant task in the system.
  
  - The system is considered as top view of all functions.
  
  - This design inherits some properties of structured design where divide and conquer methodology is used.
  
  - This design mechanism divides the whole system into smaller functions, which provides means of abstraction by concealing the information and their operation.
  
  - These functional modules can share information among themselves by means of information passing and using information available globally.
  
  - Another characteristic of functions is that when a program calls a function, the function changes the state of the program, which sometimes is not acceptable by other modules.
  
  - This type of design works well where the system state does not matter and program/functions work on input rather than on a state.

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