1 / 23

Code Converters

Code Converters. Section 3-4 Mano & Kime. Code Converters. BCD-to Excess-3 Code Converter Hex-to-Seven-Segment Decoder Lab 3 – ALU2 Arithmetic and Logic Instructions 7-Segment Decoder. BCD-to Excess-3 Code Converter. Maps for BCD-to-Excess-3 Code Converter.

jaafar
Download Presentation

Code Converters

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Code Converters Section 3-4 Mano & Kime

  2. Code Converters • BCD-to Excess-3 Code Converter • Hex-to-Seven-Segment Decoder • Lab 3 – ALU2 • Arithmetic and Logic Instructions • 7-Segment Decoder

  3. BCD-to Excess-3 Code Converter

  4. Maps for BCD-to-Excess-3 Code Converter

  5. Logic Diagram of BCD-to-Excess-3 Code Converter

  6. Excess3 inp(3:0) outp(3:0)

  7. Note: inp(3:0) = [A, B, C, D] outp(3:0) = [W, X, Y, Z]

  8. Code Converters • BCD-to Excess-3 Code Converter • Hex-to-Seven-Segment Decoder • Lab 3 – ALU2 • Arithmetic and Logic Instructions • 7-Segment Decoder

  9. Hex-to-Seven-Segment Decoder

  10. Turning on an LED

  11. 7-Segment Display

  12. a f b g e c d 7-Segment Display a b c d e f g 0 1 1 1 1 1 1 0 1 0 1 1 0 0 0 0 2 1 1 0 1 1 0 1 3 1 1 1 1 0 0 1 4 0 1 1 0 0 1 1 5 1 0 1 1 0 1 1 6 1 0 1 1 1 1 1 7 1 1 1 0 0 0 0

  13. a f b g e c d 7-Segment Display a b c d e f g 8 1 1 1 1 1 1 1 9 1 1 1 1 0 1 1 A 1 1 1 0 1 1 1 b 0 0 1 1 1 1 1 C 1 0 0 1 1 1 0 d 0 1 1 1 1 0 1 E 1 0 0 1 1 1 1 F 1 0 0 0 1 1 1

  14. Hex-to-Seven-Segment Decoder

  15. a f b g e c d Note: a – g LOW to turn ON

  16. Code Converters • BCD-to Excess-3 Code Converter • Hex-to-Seven-Segment Decoder • Lab 3 – ALU2 • Arithmetic and Logic Instructions • 7-Segment Decoder

  17. sel y Instruction name “000” a + b + “001” b - a - “010” a and b AND “011” a or b OR “100” a xor b XOR “101” true if a = 0 false otherwise 0= “110” true if a < 0 false otherwise 0< “111” true if b > a (unsigned) false otherwise U> ALU2 – Arithmetic and Logic Instructions true = all 1’s false = all 0’s

  18. Digilab2 – DIO1 Boards Four 7-segment displays dig1 dig2 dig3 dig4

  19. Digilab2 Board – Common Anodes Pins A1A2 A3 A4 Pins AtoG(6 downto 0)

  20. Digilab XLA LEDs 7-segment displays pushbuttons switches

  21. Digilab Board dig4 dig3 dig2 dig1

  22. Digilab XLA Board – Common Anodes Pins A4A3 A2 A1 Pins CA CB CC CD CE CF CG

  23. LD(1:8) ALU2 seg7dec SW(5:8) a(3:0) AtoG(6:0) y1 y q AtoG SW(1:4) b(3:0) sel(2:0) A(1:4) “0001” ldg BTN(1:3) ‘1’ Lab3 Top-level Design – Lab 3 Display y on dig4

More Related