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LED
Typical LED forward bias voltage: 1.5 to 2.0 VTypical currents needed to light LED range from 2 to 15 mA.
Turning on a Diode (1)
V2 =3.3 VV1=3.3 V, LED is off.V1=0V, LED is on.
This method is used by the 7-segment LED display on basys 2
Turning on a Diode (2)
V1 =0.0 VV2=3.3 V, LED is on.V1=0V, LED is off.
This method is used by the LED outputs on on Basys 2