Encoder and Decoder<br />Encoding, Decoding<br />
Encoder<br />ENCODER- a digital circuit that produces a binary output code depending on which of its inputs are activated....
Decoder<br />DECODER- a digital circuit that converts an input binary code into a single numeric output.<br />
ENCODERS AND DECODERS<br />ONLY ONE INPUT ACTIVATED AT A TIME<br />BINARY CODE INPUT<br />ONLY ONE OUTPUT ACTIVATED AT A T...
THE 8421 BCD CODE<br />BCD stands for Binary-Coded Decimal.<br />A BCD number is a four-bit binary group that represents o...
3<br />ELECTRONIC ENCODER -<br /> DECIMAL TO BCD<br />BCD output<br />Decimal input<br />0 0 0 0<br />0 1 0 1<br />0 1 1 1...
This encoder translates from decimal input to BCD output.</li></li></ul><li>10 line to 4 line Encoder<br />
10 line to 4 line Encoder<br />
4 line to 10 line Decoder<br />
DECODERS:  BCD TO <br />7-SEGMENT DECODER/DRIVER<br />Decimal output<br />LED<br />BCD input<br />0 0 0 0<br />0 0 0 1<br ...
 This decoder translates from BCD to decimal.
 Decimals are shown on an 7-segment LED display.
 This IC also drives the 7-segment LED display.</li></li></ul><li>TEST<br /> Q #1-  What is the decimal output from the de...
TEST<br />
TEST<br />
TEST<br />ANSWER THE FOLLOWING QUESTIONS WITH ONE OR MORE OF THESE WORDS: MUX, DEMUX, ENCODER, DECODER.<br />A. Has more i...
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Encoder and decoder

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Transcript of "Encoder and decoder"

  1. 1. Encoder and Decoder<br />Encoding, Decoding<br />
  2. 2. Encoder<br />ENCODER- a digital circuit that produces a binary output code depending on which of its inputs are activated. <br />
  3. 3. Decoder<br />DECODER- a digital circuit that converts an input binary code into a single numeric output.<br />
  4. 4. ENCODERS AND DECODERS<br />ONLY ONE INPUT ACTIVATED AT A TIME<br />BINARY CODE INPUT<br />ONLY ONE OUTPUT ACTIVATED AT A TIME<br />BINARY CODE OUTPUT<br />
  5. 5. THE 8421 BCD CODE<br />BCD stands for Binary-Coded Decimal.<br />A BCD number is a four-bit binary group that represents one of the ten decimal digits 0 through 9. <br />Example:<br />Decimal number 4926 4 9 2 6<br />8421 BCD coded number0100 10010010 0110<br />
  6. 6. 3<br />ELECTRONIC ENCODER -<br /> DECIMAL TO BCD<br />BCD output<br />Decimal input<br />0 0 0 0<br />0 1 0 1<br />0 1 1 1<br />0 0 1 1<br />Decimal<br />to<br />BCD<br />Encoder<br />7<br />5<br />0<br /><ul><li>Encoders are available in IC form.
  7. 7. This encoder translates from decimal input to BCD output.</li></li></ul><li>10 line to 4 line Encoder<br />
  8. 8.
  9. 9. 10 line to 4 line Encoder<br />
  10. 10.
  11. 11. 4 line to 10 line Decoder<br />
  12. 12. DECODERS: BCD TO <br />7-SEGMENT DECODER/DRIVER<br />Decimal output<br />LED<br />BCD input<br />0 0 0 0<br />0 0 0 1<br />0 0 1 0<br />0 0 1 1<br />0 1 0 0<br />BCD-to-<br />7-Segment<br />Decoder/<br />Driver<br /><ul><li>Electronic decoders are available in IC form.
  13. 13. This decoder translates from BCD to decimal.
  14. 14. Decimals are shown on an 7-segment LED display.
  15. 15. This IC also drives the 7-segment LED display.</li></li></ul><li>TEST<br /> Q #1- What is the decimal output from the decoder that <br /> appears on the 7-segment display?<br /> Q #2- What is the decimal output from the decoder that <br /> appears on the 7-segment display?<br /> Q #3- What is the decimal output from the decoder that <br /> appears on the 7-segment display?<br /> Q #4- What is the decimal output from the decoder that <br /> appears on the 7-segment display?<br /> Q #5- What is the decimal output from the decoder that <br /> appears on the 7-segment display?<br />Answer: 3<br />Answer: 0<br />Answer: 9<br />Answer: 7<br />Answer: 6<br />BCD input<br />Decimal output<br />1 0 0 1<br />0 0 1 1<br />0 0 0 0<br />0 1 1 1<br />0 1 1 0<br />BCD-to-<br />7-Segment<br />Decoder/<br />Driver<br />?<br />
  16. 16.
  17. 17.
  18. 18. TEST<br />
  19. 19. TEST<br />
  20. 20. TEST<br />ANSWER THE FOLLOWING QUESTIONS WITH ONE OR MORE OF THESE WORDS: MUX, DEMUX, ENCODER, DECODER.<br />A. Has more inputs than outputs.<br />ENCODER, MUX<br />B. Uses select inputs.<br />MUX, DEMUX<br />C. Can be used in parallel-to-serial conversion.<br />MUX<br />D. Produces a binary code at its output.<br />ENCODER<br />
  21. 21. E. Only one of its outputs is activated at one time.<br />DEMUX, DECODER<br />F. Used to route input signals to one of several outputs.<br />MUX<br />G. Used to generate arbitrary logic functions. <br />MUX, DEMUX<br />H. 3 line-to-8 line or binary to octal.<br />DECODER<br />MUX.<br />I. Data Selectors are also<br />
  22. 22. The End<br /> ….. Thank you ….<br />
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