Arduino UNO Rev3
RFID-RC522
Button (Switch, 3 pins)
LEDS (5mm)
7-Segment-Display 'MAN72A 743 D'
Phototransistor 'BP103B-3'
7-segment_Display - http://jmorgan-itct.wikia.com/wiki/7-segment_Display
More 7-segment-display + Karnaugh Genomgång - http://gorgeous-karnaugh.com/tutorials/practical-usage/7-segment-led-display.html