Excitadores led

Excitador led 7 segmentos 4511

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Contador 7 segmentos 4511 - 4518

Contador 4511-4518 com PCB

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Contador de 0 a 9 com 74LS47 e 74LS90

http://www.electronica-pt.com/index.php/content/view/136/93/