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Date of Birth Design Problem Digital Electronics.

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Presentation on theme: "Date of Birth Design Problem Digital Electronics."— Presentation transcript:

1 Date of Birth Design Problem Digital Electronics

2 Date of Birth 7-Segment Display Driver Logic Circuit abcdefgabcdefg XYZXYZ Design a combinational logic circuit that meets the following design specifications: There are three (3) three inputs and seven (7) outputs. As the inputs count from 000 to 111, the outputs (a – g) will generate the logic to display a date of birth (DOB) on a 7-segment display. The 7-segment display is a common cathode display. The DOB will be displayed in the MM-DD-YY format. Design Specifications 2

3 XYZ Display Example – DOB 02/13/10 February 13, 1910 ( ) is the date of birth of William Shockley. Shockley, along with John Bardeen and Walter Brattain, invented the transistor while working at Bell Labs in the 1940s. 3

4 XYZ Display abcdefg DOB Truth Table 4

5 XYZ Display a K-Map for Segment (a)

6 Segment (a) – AOI Logic X Y Z a 6

7 K-Map for Segment (b) XYZ Display b

8 Segment (b) – NAND Logic X Y Z b 8

9 K-Map for Segment (c) XYZ Display c

10 Segment (c) – NOR Logic X Y Z c 10

11 All Segments 11

12 X Y Z Segment a & d Segment b Segment c Complete Date of Birth Circuit Segment e Segment f Segment g AOI NAND NOR NAND AOI NOR Common Cathode 7-Segment Display 12


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