Contador Digital de 0 a 9

elementos:
Name :
100k potentioter, 10k resistor, 16uyf electrolityck, 2 pin terminal block , 5k potentiometer, 74ls47-segment decoder and driver, 74ls90 decade(divide-by-10) counter, 7-segment display(common anode), LED(green), n555 bipolar timer, push to break.....

CANTIDAD: 1 cada uno