Date of Birth Design Problem Digital Electronics 2.3 Date of Birth Design Problem Date of Birth Design Problem Digital Electronics Project Lead The Way, Inc. Copyright 2009

Design Specifications Date of Birth Design Problem Digital Electronics 2.3 Date of Birth Design Problem Design Specifications 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. Date of Birth 7-Segment Display Driver Logic Circuit a b c d e f g X Y Z Project Lead The Way, Inc. Copyright 2009

Date of Birth Design Problem Digital Electronics 2.3 Date of Birth Design Problem Example – DOB 02/13/10 X Y Z Display 1 February 13, 1910 (02-13-10) 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. Project Lead The Way, Inc. Copyright 2009

Date of Birth Design Problem Digital Electronics 2.3 Date of Birth Design Problem DOB Truth Table X Y Z Display a b c d e f g 1 Project Lead The Way, Inc. Copyright 2009

Date of Birth Design Problem Digital Electronics 2.3 Date of Birth Design Problem K-Map for Segment (a) X Y Z Display a 1 1 Project Lead The Way, Inc. Copyright 2009

Date of Birth Design Problem Digital Electronics 2.3 Date of Birth Design Problem Segment (a) – AOI Logic X Y Z a Project Lead The Way, Inc. Copyright 2009

Date of Birth Design Problem Digital Electronics 2.3 Date of Birth Design Problem K-Map for Segment (b) X Y Z Display b 1 1 Project Lead The Way, Inc. Copyright 2009

Segment (b) – NAND Logic Date of Birth Design Problem Digital Electronics 2.3 Date of Birth Design Problem Segment (b) – NAND Logic X Y Z b Project Lead The Way, Inc. Copyright 2009

Date of Birth Design Problem Digital Electronics 2.3 Date of Birth Design Problem K-Map for Segment (c) X Y Z Display c 1 1 Project Lead The Way, Inc. Copyright 2009

Date of Birth Design Problem Digital Electronics 2.3 Date of Birth Design Problem Segment (c) – NOR Logic X Y Z c Project Lead The Way, Inc. Copyright 2009

Date of Birth Design Problem Digital Electronics 2.3 Date of Birth Design Problem All Segments Project Lead The Way, Inc. Copyright 2009

Date of Birth Design Problem Digital Electronics 2.3 Date of Birth Design Problem X Y Z Complete Date of Birth Circuit 02-13-10 Common Cathode 7-Segment Display AOI Segment a & d NAND Segment b NOR Segment c AOI Segment e NAND Segment f NOR Segment g Project Lead The Way, Inc. Copyright 2009