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 Manipulating DataFrames with Pandas - Python Next Difference between Software Engineering process and Conventional Engineering Process Share your thoughts in the comments Add Your Comment Please Login to comment...