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CBSE Class 12 Computer Science Boolean Algebra. CBSE issues sample papers every year for students for class 12 board exams. Students should solve the CBSE issued sample papers to understand the pattern of the question paper which will come in class 12 board exams this year. The sample papers have been provided with marking scheme. It’s always recommended to practice as many CBSE sample papers as possible before the board examinations. Sample papers should be always practiced in examination condition at home or school and the student should show the answers to teachers for checking or compare with the answers provided. Students can download the sample papers in pdf format free and score better marks in examinations. Refer to other links too for latest sample papers.
Boolean Algebra Chapter: 08
Truth table is a table, which represents all the possible values of logical variables/statements along with all the possible results of given combinations of values.
Logical operators are derived from the Boolean algebra, which is the mathematical
representation of the concepts without going into the meaning of the concepts.
1.NOT Operator—Operates on single variable. It gives the complement value of variable.
2.OR Operator -It is a binary operator and denotes logical Addition operation and is represented by ”+” symbol
3. AND Operator – AND Operator performs logical multiplications and symbol is (.) dot.
Basic Logic Gates
A gate is simply an electronic circuit, which operates on one or more signals to produce an output signal. Gates are digital circuits because the input and output signals are either low (0) or high (1). Gates also called logic circuits.
There are three types of logic gates:
1. Inverter (NOT gate)
2. OR gate
3. AND gate
1. NOT gate :This gate takes one input and gives a single output. The symbol of this logic gate is
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