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LED Display. LED Typical LED forward bias voltage: 1.5 to 2.0 V Typical currents needed to light LED range from 2 to 15 mA.

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Presentation on theme: "LED Display. LED Typical LED forward bias voltage: 1.5 to 2.0 V Typical currents needed to light LED range from 2 to 15 mA."— Presentation transcript:

1 LED Display

2 LED Typical LED forward bias voltage: 1.5 to 2.0 V Typical currents needed to light LED range from 2 to 15 mA.

3 Turning on a Diode (1) V2 =3.3 V V1=3.3 V, LED is off. V1=0V, LED is on. This method is used by the 7-segment LED display on basys 2

4 Turning on a Diode (2) V1 =0.0 V V2=3.3 V, LED is on. V1=0V, LED is off. This method is used by the LED outputs on on Basys 2

5 A 7-Segment Display Containing Seven Light Emitting Diodes Used by Basis2

6 Segment Values Required to display hex digits from 0 to F

7 Display Lower Case d

8 K-map for the segment e

9 Erroneous Result (Not the right way to display “C”)

10 Error in Representing “b” (missing!)

11 One Way of Representing “b” (missing!) 1

12 Hex7seg_le.v

13 hex7seg_le_top

14 Decimal Point On

15 Showing Only 1 Digit


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