1. 7-Segment Displays Module M7.2 Section 6.5

2. Turning on an LED Common Anode

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

4. 7-Segment Display

5. a b c d e f g 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

6. 7-Segment Display a b c d e f g 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

7. K-Map for Segment e

8. 1 1 11 1 D3 D2 D1 D0 00011110 00 01 11 10 11 1 1 1 D3 & D2 D1 & !D0 !D2 & !D0 e = D3 & D2 # !D2 & !D0 # D3 & D1 # D1 & !D0 D3 & D1

9. 7seg.abl MODULE seg7 TITLE '7 Segment Decoder, A. Student, 7/12/02' DECLARATIONS " INPUT PINS " Z3..Z0 PIN 6,7,11,5;" Switch 1..4 Z = [Z3..Z0];" 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 Z3..Z0 Can’t start with numbers

10. EQUATIONS @radix 16;" Identify the Hex Base truth_table ( Z -> Segments )" 7-segment display 0 -> 7E; 1 -> 30; 2 -> 6D; 3 -> 79; 4 -> 33; 5 -> 5B; 6 -> 5F; 7 -> 70; 8 -> 7F; 9 -> 7B; 0A -> 77; 0B -> 1F; 0C -> 4E; 0D -> 3D; 0E -> 4F; 0F -> 47; END seg7 7seg.abl (cont’d) HEX 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 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