Logic gates verification
- 1. EXPERIMENT-1 OBJECTIVE-- Logic Gate verification using various ICs. SIMULATION ENVIRONMENT-- LTSpiceECE(EC2) THEORY--Logic gates are electronic circuits which perform logical functions on one or more inputs to produce one output. There are seven logic gates. When all the input combinations of a logic gate are written in a series and their corresponding outputs written along them, then this input/ output combination is called Truth Table. VARIOUS GATES-- 1-AND-- FIG-1.i Circuit for AND Gate INPUT A INPUT B OUTPUT 1 1 1 1 0 0 0 1 0 0 0 0
- 2. FIG-1.ii Pulse Output for AND Gate 2-OR-- FIG-2.i Circuit for OR Gate INPUT A INPUT B OUTPUT 1 1 1 1 0 1 0 1 1 0 0 0
- 3. FIG-2.ii Pulse Output for OR Gate 3-NOT-- FIG-3.i Circuit for NOT Gate INPUT OUTPUT 1 0 0 1
- 4. FIG-3.ii Pulse Output for NOT Gate 4-NAND Gate-- NAND gate is actually a series of AND gate with NOT gate. If we connect the output of an AND gate to the input of a NOT gate, this combination will work as NOT-AND or NAND gate. Z=AB FIG-4.i Circuit for NAND Gate INPUT A INPUT B OUTPUT 0 0 1 0 1 1 1 0 1 1 1 0
- 5. FIG-4.ii Pulse Output for NAND Gate 5-NOR Gate-- NOR gate is actually a series of OR gate with NOT gate. If we connect the output of an OR gate to the input of a NOT gate, this combination will work as NOT-OR or NOR gate. FIG-5.i Circuit for NOR Gate INPUT A INPUT B OUTPUT 0 0 1 0 1 0 1 0 0 1 1 0
- 6. FIG-5.ii Pulse Output for NOR Gate 6-Exclusive OR (X-OR) Gate-- Ex-OR gate produces an output as 1, when number of 1’s at its inputs is odd, otherwise output is 0. It has two inputs and one output. FIG-6.i Circuit for Ex-OR Gate INPUT A INPUT B OUTPUT 0 0 0 0 1 1 1 0 1 1 1 0
- 7. FIG-6.ii Pulse Output for Ex-OR Gate 7-Exclusive NOR (Ex-NOR) Gate-- X-NOR gate produces an output as 1, when number of 1’s at its inputs is not odd, otherwise output is 0. It has two inputs and one output. FIG-7.i Circuit for Ex-NOR Gate INPUT A INPUT B OUTPUT 0 0 1 0 1 0 1 0 0 1 1 1
- 8. FIG-7.ii Pulse Output for Ex-NOR Gate RESULT-- All the truth table of logic gates AND , OR , NOT , NAND , NOR , X-OR , X-NOR are verified by using the integrated circuits on online simulator.