Lecture 1 LAB(DLD) logic gate, digital logic design primar lvl description..pptx

logic gate, digital logic design primar lvl description.

1. What is Logic gate Logic gates are the digital circuits capable of performing a particular logic function by operating on a number of binary inputs. OR Logic gates are the basic building blocks of any digital circuit Most electronic devices we use today will have some form of logic gates in them.

2. Types of Logic Gate

3. Basic Logic Gate Basic Logic Gates are the fundamental logic gates using which universal logic gates and other logic gates are constructed.   They have the following properties- Basic logic gates are associative in nature. Basic logic gates are commutative in nature. There are following three basic logic gates- AND Gate OR Gate NOT Gate

4. AND GATE   The output of AND gate is high (‘1’) if all of its inputs are high (‘1’). The output of AND gate is low (‘0’) if any one of its inputs is low (‘0’).

5. Logic Symbol-   The logic symbol for AND Gate is as shown below-  

6. Truth Table of 2 input AND gate A B Y = A.B 1 1 1 1 1

7. Truth Table of 3 input AND gate

8. Timing Diagram of And Gate

9. OR Gate The output of OR gate is high (‘1’) if any one of its inputs is high (‘1’). The output of OR gate is low (‘0’) if all of its inputs are low (‘0’).

10. Logic Symbol- The logic symbol for OR Gate is as shown below-

11. Truth Table of 2 input OR Gate A B Y = A + B 1 1 1 1 1 1 1

12. Truth Table of 3 input OR Gate

13. Timing Diagram of OR Gate

14. NOT GATE The output of NOT gate is high (‘1’) if its input is low (‘0’). The output of NOT gate is low (‘0’) if its input is high (‘1’).

15. Logic Symbol- The logic symbol for NOT Gate is as shown below-

16. A Y = A’ 1 1

17. Timing Diagram of Not Gate

18. Circuitverse Input Button Power Ground Constant Value Stepper Random Counter Output RGB Led Digital Led Variable Led Hex Display Seven Segment Display Sixteen Segment Display Square RGB Light RGB LED Matrix AND OR NOT XOR NAND NOR XNOR

19. Circuitverse Multiplexer DE-multiplexer Bit Selector MSB LSB Priority Encoder Decoder D Flip Flop D Latch T Flip Flop Jk Flip Flop SR Flip Flop TTY Keyboard Clock ROM Rectangle Arrow Image Annotation Text Adder ALU TriState Flip Flop Tunnel Buffer Controlled Inverter TB Input TB Output Force Gate

20. De-Morgan’s Theorem Using Circuitverse

21. Thank You