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CSD · End Term · 31 Aug 2025 (Afternoon)

20 questions · 50 marks · 90 min

Answer key Take as mock

Indian Institute of Technology Madras

BS Degree Programme · Examination & Study Paper

Computer System Design

End Term · 31 Aug 2025 (Afternoon)

Official Paper

Examination Instructions & Guidelines

Solve on notebook/paper first before checking solutions.
MCQ: Exactly 1 option is correct. Negative marking applies.
NAT: Numerical response. No negative marking.
Scientific calculator allowed for all calculations.
Official answer key is sealed at the end of this sheet.

Q1MCQ1 Mark·Choose one option
Asked 2 times Key ↓
In a 4-bit system, the one’s complement of the binary number 1100 is 0111.
1. ATRUE
2. BFALSE
Q2MCQ1 Mark·Choose one option
Asked 2 times Key ↓
A synchronous counter triggers all flipflops using a common clock signal, while an asynchronous counter triggers each flipflop using the output of the previous flipflop.
1. ATRUE
2. BFALSE
Q3MCQ1 Mark·Choose one option
Asked 2 times Key ↓
In a system with 64 unique states, 4 flipflops are sufficient to represent all the states.
1. ATRUE
2. BFALSE
Q4MCQ1 Mark·Choose one option
Asked 2 times Key ↓
In a decoder, at any point, exactly one of the outputs is 1 and all the rest are 0s.
1. ATRUE
2. BFALSE
Q5MCQ1 Mark·Choose one option
Asked 2 times Key ↓
According to Moore’s law, if a computer system has 2 million transistors today, then it will have approximately 32 million transistors in 7 years.
1. ATRUE
2. BFALSE
Q6MCQ3 Marks·Choose one option
Asked 2 times Key ↓
1. A
2. B
3. C
4. D
5. E
Q7NAT3 Marks·Write the number
Asked 5 times Key ↓
Your answer:
Q8NAT3 Marks·Write the number
Asked 3 times Key ↓
Your answer:
Q9NAT3 Marks·Write the number
Asked 2 times Key ↓
Your answer:
Q10NAT3 Marks·Write the number
Asked 4 times Key ↓
Your answer:
Q11NAT3 Marks·Write the number
Asked 2 times Key ↓
Your answer:
Q12NAT3 Marks·Write the number
Asked 2 times Key ↓
Your answer:
Q13NAT3 Marks·Write the number
Asked 2 times Key ↓
Consider a mod-12 up counter with an initial state of 0111. What will be the state of the counter after 25 clock pulses?
Your answer:
Q14NAT3 Marks·Write the number
Asked 3 times Key ↓
Your answer:
Q15NAT3 Marks·Write the number
Asked 2 times Key ↓
Consider a 10-bit Johnson counter. What is the total number of unique states it can cycle through?
Your answer:
Q16Short answer3 Marks·Write the answer
Asked 2 times Key ↓
Your answer:
Q17NAT3 Marks·Write the number
Asked 2 times Key ↓
Your answer:
Q18NAT3 Marks·Write the number
Asked 2 times Key ↓
Your answer:
Q19Short answer3 Marks·Write the answer
Asked 2 times Key ↓
Your answer:
Q20NAT3 Marks·Write the number
Asked 2 times Key ↓
Your answer:

Official Key

Master Answer Key & Explanations

Official answer keys from IIT Madras BS past papers. Click any question to review.

Reveal Key

Q1B

Q2A

Q3B

Q4A

Q5B

Q6E

Q71

Q85

Q94

Q102

Q116

Q123

Q131000

Q140

Q1520

Q160x09

Q1718

Q188

Q190x2D4D

Q2011101100

Questions and answer keys are reproduced from the official IIT Madras BS papers. BTechi is not affiliated with IIT Madras.