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Published on: 08/06/2021
QB365 provides detailed and simple solution for every book back questions in class 11 Computer Science subject.It will helps to get more idea about question pattern in every book back questions with solution.
Download Tamil Nadu 11th Standard Computer Science question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.
Questions + Answers key
Take MCQ Computer Science Test
1.
What is radix of a number system? Give example
2.
Write the De Morgan's law.
3.
Give the truth table of XOR gate
4.
Reason out why the NAND and NOR are called universal gates?
5.
Write a short note on XNOR gate.
1.
The radix refers to the base of a number system: the total number of possible digits.
The decimal number system that we all use is base ten, as it has ten distinct digits (0,1,2,3,4,5,6,7,8,9). Eg: Binary system- Radix 2
2.
De Morgan's
\(\bar { A+B } =\bar { A } .\bar { B } \)
\(\left( \bar { A.B } \right) =\bar { A } +\bar { B } \)
3.
XOR - Truth table
| A | B | A \(\oplus \)B |
| 0 | 0 | 0 |
| 0 | 1 | 1 |
| 1 | 0 | 1 |
| 1 | 1 | 0 |
4.
NAND and NOR gates are called Universal gates, because the fundamental logic gates can be realized through them.
5.
The XNOR (exclusive - NOR) gate is a combination XOR gate followed by an inverter. Its output is "true" if the inputs are the same, and "false" if the inputs are different.
The output of XNOR is C = AB + \(\bar {A} \) \(\bar {B} \)
= A ⊙ B
where ⊙ indicates included dot.
Truth table
| Input | Output | |
| A | B | C |
| 0 | 0 | 1 |
| 0 | 1 | 0 |
| 1 | 0 | 0 |
| 1 | 1 | 1 |
Logic symbol :
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Tamilnadu Stateboard 11th Standard Subjects
Maths
Commerce
Economics
Biology
Business Maths and Statistics
Accountancy
Computer Science
Physics
Chemistry
Maths
Biology
Economics
Physics
Chemistry
History
Business Maths and Statistics
Computer Science
Accountancy
Computer Applications
History
Computer Technology
Commerce
Computer Applications
Computer Technology
Tamil
English
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