Upcoming SlideShare
×

# EASA Part 66 Module 5.5 : Logic Circuit

6,083
-1

Published on

Presentation slide basic information
AND + OR + NAND + NOR + EX NOR + Application

Other EASA Part66 slide and note can be found here :
http://part66.blogspot.com

6 Likes
Statistics
Notes
• Full Name
Comment goes here.

Are you sure you want to Yes No
• Be the first to comment

Views
Total Views
6,083
On Slideshare
0
From Embeds
0
Number of Embeds
49
Actions
Shares
0
545
0
Likes
6
Embeds 0
No embeds

No notes for slide

### EASA Part 66 Module 5.5 : Logic Circuit

1. 1. 5.5 LOGIC CIRCUIT
2. 2. LOGIC SYSTEMS• System performs calculation or makes decisions• A logical operation on one or more logic inputs and produces a single logic output to make decision.• Using electronic component that can conduct electricity based on a rule either analog or digital.• Primarily implement using diodes or transistor acting as electronic switch
3. 3. POSITIVE AND NEGATIVE LOGIC• Binary digits are use for the input in logic gate• Positive logic : Low voltage = 0 High voltage = 1• Negative logic : Low voltage = 1 High voltage = 0* Normally use positive logic
4. 4. OR GATE IF GOT 1 = RESULT MUST BE 1 X A B X 0 0 0 0 1 1 1 0 1 1 1 1 X = A + B
5. 5. AND GATE IF GOT 0 = RESULT MUST BE 0 A B X 0 0 0 0 1 0 1 0 0 1 1 1 X = A.B
6. 6. NOT GATE A X 0 1 1 0
7. 7. NAND GATE A B X 0 0 1 0 1 1 X 1 0 1 1 1 0
8. 8. NOR GATE A B X 0 0 1 X 0 1 0 1 0 0 1 1 0
9. 9. EXCLUSIVE OR GATE A B X 0 0 0 0 1 1 1 0 1 X 1 1 0
10. 10. EXCLUSIVE OR GATE C B A X 0 0 0 0 0 0 1 1 0 1 0 1 X 0 1 1 0 1 0 0 1Any ODD number of Inputs gives X 1 0 1 0 1 1 0 0 1 1 1 1
11. 11. EXCLUSIVE NOR GATEA A B X XB 0 0 1 0 1 0 X 1 0 0 1 1 1
12. 12. GATE TABLE EX- NOTA B OR NOR AND NAND EX-OR NOR A0 0 0 1 0 1 0 1 10 1 1 0 0 1 1 0 11 0 1 0 0 1 1 0 01 1 1 0 1 0 0 1 0
13. 13. UNIVERSAL GATE• NAND gate is universal gate• It can make another gate NOT GATE AND GATE OR GATE B
14. 14. IC - INTEGRATED CIRCUIT Quad 2-input AND Gate 7408
15. 15. ADDERS• An adder or summer is a digital circuit that performs addition of numbers.• For new processor, adder are use to calculate addresses, table indices (database).• The most common adders operate on binary numbers
16. 16. HALF ADDER CIRCUIT• Required 2 input and provide 2 output• Combination of an exclusive OR and an AND gate A B SUM CARRY 0 0 0 0 0 1 1 0 1 0 1 0 1 1 0 1 SUM = A B CARRY = A . B
17. 17. FULL ADDER CIRCUIT• Required 3 input provide 2 output• Combination of 2 half adder and OR gate. INPUTS OUTPUTS A B Cin Cout S 0 0 0 0 0 1 0 0 0 1 0 1 0 0 1 1 1 0 1 0 0 0 1 0 1 1 0 1 1 0 0 1 1 1 0 1 1 1 1 1
18. 18. AIRCRAFT LOGIC CIRCUIT• LANDING GEAR WARNING CIRCUIT
19. 19. AIRCRAFT LOGIC CIRCUIT• FLIGHT DIRECTOR GYRO FLAG - drop when gyro system malfunction either loss of vacuum or electrical signal Error Flag
20. 20. GYRO FLAG SYSTEM
21. 21. SERVO ALTIMETER OFF FLAG• Correct operating when sin outputs (‘0’) and the cos outputs (‘1’).• When total output is 1, it will energising the OFF Flag coil, removing the flag from view.
1. #### A particular slide catching your eye?

Clipping is a handy way to collect important slides you want to go back to later.