DFD for ATM system

DFD (Data Flow Diagram) of an ATM System consist of two levels of DFD. These levels are Level 0 DFD and Level 1 DFD. Both these levels are used for making the DFD of an ATM system.

  1. Level 0 DFD :
    This level is also known as Context Level DFD. At this level, only the interacting inputs and outputs with a system are described. The DFD of this level is shown below:

  2. Level 1 DFD :
    At this level, more detailed information is given about the processing of the ATM system. The DFD of this level is shown below:

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