DFD for ATM system Last Updated : 12 Jun, 2020 Improve Improve Like Article Like Save Share Report 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. 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: 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: Like Article Suggest improvement Previous Purpose of different Utility Software Next Difference between Software Engineering process and Conventional Engineering Process Share your thoughts in the comments Add Your Comment Please Login to comment...