Designed with EdrawMax, this template is a Level 0 DFD for an ATM system. At the center is the "ATM", which interacts with various components. The "Customer Keyboard" allows users to input commands, which are processed by the "ATM" and communicated to the "Accounts Database". The "Card Reader" reads customer cards, sending data to the "ATM". The "ATM" also interacts with the "Control System" for operational management. Outputs from the "ATM" include information displayed on the "Screen", printed receipts from the "Printout Dispenser", and cash dispensed by the "Cash Dispenser". This diagram serves as a high - level overview of the data flow and interactions within an ATM system, useful for understanding its basic software architecture.
