This document discusses logic gates and their truth tables. It describes the objectives, theory, materials, and procedures for building logic gate circuits using basic components like batteries, switches, wires, and a galvanometer. The document provides the symbols and truth tables for NOT, AND, and OR gates. It explains how to write the Boolean functions for each gate and construct circuits to match the truth tables, observing the output on the galvanometer. Precautions are noted to make tight, clean connections and use a key to open the circuit when not in use.
This document discusses logic gates and their truth tables. It describes the objectives, theory, materials, and procedures for building logic gate circuits using basic components like batteries, switches, wires, and a galvanometer. The document provides the symbols and truth tables for NOT, AND, and OR gates. It explains how to write the Boolean functions for each gate and construct circuits to match the truth tables, observing the output on the galvanometer. Precautions are noted to make tight, clean connections and use a key to open the circuit when not in use.
This document discusses logic gates and their truth tables. It describes the objectives, theory, materials, and procedures for building logic gate circuits using basic components like batteries, switches, wires, and a galvanometer. The document provides the symbols and truth tables for NOT, AND, and OR gates. It explains how to write the Boolean functions for each gate and construct circuits to match the truth tables, observing the output on the galvanometer. Precautions are noted to make tight, clean connections and use a key to open the circuit when not in use.
This document discusses logic gates and their truth tables. It describes the objectives, theory, materials, and procedures for building logic gate circuits using basic components like batteries, switches, wires, and a galvanometer. The document provides the symbols and truth tables for NOT, AND, and OR gates. It explains how to write the Boolean functions for each gate and construct circuits to match the truth tables, observing the output on the galvanometer. Precautions are noted to make tight, clean connections and use a key to open the circuit when not in use.
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OBJECTIVE
To study and verify the truth
table of given logic gates.
THEORY The basic logic gates are the building blocks of more complex logic circuits. This logic Gates perform the basic Boolean functions, such as AND, OR, NAND, NOR. Each gate has one or two binary inputs, A & B, and one binary output C.
1. Or-gate:- The symbol & truth table for OR-gate is shown below.
INPUT OUTPUT A B C=A+B 0 0 0 0 1 1 1 0 1 1 1 1
2. AND-gate:- The symbol & truth table for AND- gate are shown below.
INPUT OUTPUT a B C=a.b 0 0 0 1 0 0 0 1 0 1 1 1
3. Not-gate:- The symbol & truth table for not- gate are shown below.
INPUT Output a C=A 0 1 1 0
Material Required- A battery of 6v, two switches, connecting wires, galvanometer, resistance box.
Procedure- 1. Write product term for each input. Combination where Boolean function has output 1. 2. Add all to obtain the Boolean function. 3. Draw the circuit using BASIC LOGIC Gates. 4. if the output is 1 then the galvanometer shows deflection & if the output is 0 the galvanometer will show no deflection.
OBSERVTIONS:-
the following circuit using logic gates are 1. Not gate:-
INPUT OUtput a C=A 0 1 1 0
2. And-gate:-
INPUT OUTPUT a B C=a.b 0 0 0 1 0 0 0 1 0 1 1 1
3. Or-gate:-
INPUT OUTPUT A B C=A+B 0 0 0 0 1 1 1 0 1 1 1 1
Result A logic gate is prepared from the given truth table .
Precautions 1. All the connections should be neat, clean & tight. 2. Key should be used in circuit & opened when the circuit is not being used.