java

Class 12th Computer Science paper | Computer Science paper questions (Solutions will be uploaded soon)

Class 12th Computer Science paper. Computer Science paper questions (Solutions will be uploaded soon)

java

 

Part-1

Question-1

a)  What do you understand about Gate?

b)  Prove using truth table. X.(Y + Z) = X.Y + X.Z

c)  Prove using truth table. X + XY = X

d)  What is proposition?

e)  Which gates are called Universal gates and why?

Question-2

a)  Verify if, P.(P’ + Q’) = (P=>Q) using truth table.

b)  What is connective?

c)  Give truth table proof for De Morgan’s law.

d)  Prove the complementary law with the help of truth table.

e)  Prove x + x’y = x + y using Boolean algebraic method.

Question-3

a)  Convert the following function into its Canonical sum-of-products form :

F(X,Y,Z) = ∑ (0, 1, 3, 5, 7)

b)  Convert the following function into its Canonical products-of-sum form :

F(X,Y,Z) = ∏ (2, 3, 4, 6,7)

c)  Convert the following function into its Cardinal sum-of-product form :

F = A’B’C’ + AB’C’ + AB’C + ABC’ + ABC

d)  Convert the following function into its Cardinal products-of-sum form :

F = A+B+C’ . A+B’+C . A+B’+C’ + A’+B+C’ . A+B+C

e)  Draw K-Map for the following:

F (L,M,O,P) = Π (0, 2, 7, 8, 10, 15)

 

Part-2 (Section-A)

Question-3

a)  Draw the logic circuit for the following using NOR gates only.

i) (X + Y) . (X’ + Y) . (X’ + Y’)

ii) (X + Y + Z) . (X + Y’ + Z’)

b)  What is meant by Minterm and Maxterm?

Question-4

a)  Draw the logic circuit for the following using NAND gates only.

i) xy + xy’z + xyz
ii) ABC + AB’C’ + A’BC

b)  Simplify :     (A+C).(A+A.D)+A.C+C

Question—5

What is Full Adder? Draw the truth table, SOP expression and Logic diagram for a Full adder.

Section-B

Question-6

Write a java program to take two numbers from user and check numbers are Twins Prime or not. Twins Prime Numbers are – like:

3 and 5.

5 and 7.

11 and 13.

Question-7

Write a java program to print a tribonacci series (series whose first three terms are given and every successive term is sum of previous three terms e.g.

0 1 2 3 6 11 20 27

Question-8

Write a menu driven program in java:

a)  To input a number and check whether it is a NEON number or not.

b)  To print the REPUNIT series: 1, 11, 111, 1111…… upto n term.
Note: A number is said to be a NEON , if sum of all the digits of the square of the number is equal to the number itself. For example: 9 is a NEON number because square of 9 is 81 and sum of digits of 81= 8 +1 = 9.

Section-C

Question-9

a)  Use Karnaugh’s map to reduce the function F and draw a logic gate diagram for the
reduced form. [10]

(a)- Boolean function is F(A,B,C,D) = ∑ (0,2,5,7,8,10,11,13,14,15).

(b)- Boolean function is F(A,B,C,D) = Π (0,1,2,3,5,7,8,10).

b)  What is the different between composite and primitive data types with example?

Question-10

Use Karnaugh’s map to reduce the function F and draw a logic gate diagram for the reduced form.

(a)- Boolean function is F(A,B,C,D) = ∑ (5,6,7,8,9,10,14).

(b)- Boolean function is F(A,B,C,D) = Π (0,2,6,8,10,14).

b) What is OOP? Explain its features.

Question-11

Find the complement of F = x + y.z; then show that F.F’ = 0 and F + F’ = 1

 

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