7 Segment Displays Module M 7 2 Section

7 -Segment Displays Module M 7. 2 Section 6. 5

Turning on an LED Common Anode

Turning on an LED Common Cathode This is what we use in Lab

7 -Segment Display

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

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

K-Map for Segment e

K-Map for Segment e e = D 3 & D 2 # !D 2 & !D 0 # D 3 & D 1 # D 1 & !D 0 D 1 D 0 00 D 3 D 2 00 D 3 & D 2 !D 2 & !D 0 01 11 1 10 1 01 1 10 1 1 1 D 3 & D 1 & !D 0

7 seg. abl MODULE seg 7 Can’t start with numbers Z 3. . Z 0 TITLE '7 Segment Decoder, A. Student, 7/12/02' DECLARATIONS " INPUT PINS " Z 3. . Z 0 PIN 6, 7, 11, 5; " Switch 1. . 4 Z = [Z 3. . Z 0]; " 4 -bit input vector " OUTPUT PINS " [A, B, C, D, E, F, G, DP] PIN 15, 18, 23, 21, 19, 14, 17, 24 ISTYPE 'com'; Segments = [A, B, C, D, E, F, G]; “ 7 -segment LED display

EQUATIONS @radix 16; " Identify the Hex Base truth_table ( Z -> Segments ) " 7 -segment display 0 -> 7 E; a b c d e 1 -> 30; 0 1 1 1 2 -> 6 D; HEX 1 0 1 1 0 0 3 -> 79; 2 1 1 0 1 1 4 -> 33; 3 1 1 0 5 -> 5 B; 4 0 1 1 0 0 6 -> 5 F; 5 1 0 1 1 0 7 -> 70; 6 1 0 1 1 1 8 -> 7 F; 7 1 1 1 0 0 9 -> 7 B; 8 1 1 1 0 A -> 77; 9 1 1 0 0 B -> 1 F; A 1 1 1 0 C -> 4 E; b 0 0 1 1 1 0 D -> 3 D; C 1 0 0 1 1 0 E -> 4 F; d 0 1 1 0 F -> 47; E 1 0 0 1 1 END seg 7 F 1 0 0 0 1 7 seg. abl (cont’d) f 1 0 0 0 1 1 1 1 1 0 1 1 g 0 0 1 1 1