data flow diagram for atm(automated teller machine)
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1. Context diagrams are small and will fit on one page. 2. Use the name of the information system as the process name in the context diagram. 3. Use unique names within the other symbols. 4. Make the process named after the information system 0. 5. Identify all the entities. 6. Identify all the names and content of the data flow. 7. Identify the direction of the data flow. 8. Draw the diagram using appropriate symbols.
RAM requires a continuous flow of current to retain data.
A diode when forward biased will allow the flow of current while reverse biasing will cut off the flow of current. It is the basic building block of any semiconductor.
ATM- Automated Teller Machine
125-130 per atm