import machine 
from machine import Pin

#definimos salidas
LedRojoA     = Pin(26,Pin.OUT)
LedVerdeB    = Pin(27,Pin.OUT)
LedAzulC     = Pin(14,Pin.OUT)
LedAmarilloD = Pin(12,Pin.OUT)

#definimos entradas
SliderS1 = Pin(4,Pin.IN,Pin.PULL_UP)
SliderS0 = Pin(2,Pin.IN,Pin.PULL_UP)

while True:
    S1 = SliderS1.value()
    S0 = SliderS0.value()

    A = ((not S1 and not S0))
    B = ((not S1 and S0))
    C = ((S1 and not S0))
    D = ((S1 and S0))

    LedRojoA.value(A)
    LedVerdeB.value(B)
    LedAzulC.value(C)
    LedAmarilloD.value(D)