Segment Identification Seven Segment Displays Seven Segment Displays Digital Electronics 2.3 Data of Birth Design Problem Segment Identification A Seven-Segment Display (SSD) is simply a figure eight grouping of LEDs {some include a decimal point (DP)}. Each Segment is labeled ____ thru ____ SSDs are available in two configurations Common __________ (all LEDs are connected to ground) Common __________ (all LEDs are connected to Vcc) The common cathode and common anode diagrams shown are typical pin layouts. They may or may not be the same as the device that the students will use to build their circuits. http://www.thelearningpit.com/lp/doc/7seg/7seg.html a b c d e g dp f 1 Project Lead The Way, Inc. Copyright 2009 1

Example #1: Common Anode SSD Seven Segment Displays Seven Segment Displays Digital Electronics 2.3 Data of Birth Design Problem Example #1: Common Anode SSD Example What value would be displayed in the common anode seven-segment display shown? Pause the presentation and allow the students to work on the example. The solution is on the next slide. 2 Project Lead The Way, Inc. Copyright 2009 2

Example #2: Common Cathode SSD Seven Segment Displays Seven Segment Displays Digital Electronics 2.3 Data of Birth Design Problem Example #2: Common Cathode SSD Example What value would be displayed in the common cathode seven-segment display shown? Pause the presentation and allow the students to work on the example. The solution is on the next slide. 3 Project Lead The Way, Inc. Copyright 2009 3

Example #3: Resistor Value Seven Segment Displays Seven Segment Displays Digital Electronics 2.3 Data of Birth Design Problem Example #3: Resistor Value Example Calculate the resistor value required to have a luminous intensity of 2.5. Pause the presentation and allow the students to work on the example. The solution is on the next slide. 4 Project Lead The Way, Inc. Copyright 2009 4