bcd to seven segment.pptx
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The document discusses a BCD to 7-segment decoder which converts binary coded decimal (BCD) input into signals that drive the segments of a 7-segment display. A 7-segment display contains 7 LED segments that can be illuminated in different combinations to display numbers or characters. The decoder uses a truth table and Karnaugh maps to simplify the logic and outputs the appropriate signals to light the correct segments based on the 4-bit BCD input. Commonly used ICs like the 7447 contain this decoding logic and are used to interface between BCD inputs and either common-anode or common-cathode 7-segment displays.
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A digital or binary decoder is a digital combinational logic circuit which can convert one form of digital code into another form.
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2. Applications of different codes are covered. BCD is used for 7-segment displays. Gray code is used in shaft encoders. Excess-3 is used for subtraction.
3. The document concludes by designing a BCD to 7-segment display decoder circuit and explaining the application of gray code in shaft encoders.
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The document presents a project on building a BCD counter. It introduces the group members and provides an overview of the content which includes introduction, background, necessary materials, circuit diagram, pin assignments, working principle and timing diagram of the BCD counter. It discusses how a BCD counter works from generating a clock pulse to displaying the output in decimal on a 7 segment display. It also includes the Xilinx module description and test bench for verification.
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This presentation provides a very brief overview of a Seven Segment Display.
For details on how to use Seven Segment Display with Arduino please visit www.harekrishnahub.com
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bcd to seven segment.pptx
- 1. BCD to 7 Segment Decoder
- 2. BCD binary coded decimal
- 3. 7-Segment Display It is a digital device that can be used for displaying decimal number, alphabets, and characters. contains 7 LED segments There are two types of 7-Segment displays. Common Cathode Common Anode
- 4. 7-Segment Display There are two types of 7-Segment displays. Common Cathode Common Anode
- 5. Display combination of decimal numbers
- 6. Truth Table Assume common cathode 7-Segment display. Suppose the binary input ABCD to the decoder and output a, b, c, d, e, f, & g for the display.
- 7. Karnaugh Maps Simplification For output a:
- 8. Karnaugh Maps Simplification For output a:
- 10. 7-Segment Display Decoder Circuit
- 11. BCD to 7-Segment Decoder IC & Pin outs The commonly used IC for BCD to 7-segment decoding is 7447 for driving common-anode LEDs
- 12. BCD to 7-Segment Decoder IC & Pin outs common-cathode LEDs