EVERWIN VIDHYASHRAM SENIOR SEC.SCHOOL, KOLATHUR.
WEEKLY ASSESSMENT
11TH COMPUTER SCIENCE
Date : 03/10/20 Marks:40
I. FILL IN THE BLANKS: 5*1=5
1. Bits stands for -----------------.
2. Which gates are called as universal gates?
3. Boolean expression for NOR gate -------------.
4. Which symbol corresponds to the XNOR operator?
5. What is the dual of A.1=A
II. Answer the following : 5*2=10
6. What is Boolean Variable?
7. Explain the Truth Table of XNOR Gate.
8. State De-Morgan’s laws?
9. Draw the truth table for the Boolean expression - x.x’ + xy
10. What are Boolean operators? Name the operatora
III. Answer the following : 5*3=15
11. Define Logic Gates .Give an example.
12. Write the properties related to complement.
13. How can be realized NOR gate as AND gate.
14. Prove that i) 0+A =A ii) 1.A=A
15.Name a unary Boolean Operator.
IV. Answer in Detail. 2*5=10
16 . Explain the fundamental logic gates .
17. Prove De-Morgan’s first law with neat diagram.
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