This thesis presents bolts Contact Digital. In this frame Gaa is a component. Microcontroller Modules rfid rc522 module switch sensor for digital modules and data logger shield for the booming recording time - out of the door into the sd card with the working principle is the module rfid rc522 to get the card to determine whether the value of the card. matches a preset value or not. Modular switches, sensors for digital modules and data logger shield to get the password from the press and then sent to the microprocessor, call the dealer for the cigarettes and the booming recorded data of measurement of time to perform a booming recorded into. sd card
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