biometric finger print levels of operational functions

For a biometric finger print to account for clocking in perform a functional analysis. Construct a functional block diagram showing three levels of operational functions. From one of the blocks in the operational functional flow diagram, show two levels of maintenance functions. Show how the operational functions and the maintenance functions relate.
Select one block from the operational functional diagram and one block from the maintenance functional diagram in problem 1, and show inputs-outputs and how specific resource requirements are identified (e.g., hardware, software, people, facilities, data, etc.)

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