Computer Organization and Architecture Unit 2 – Arithmetic & Logic Unit: AKTU previous year questions
33 AKTU questions from Unit 2 (Arithmetic & Logic Unit) asked in 2020–2026, tagged by marks, year and topic. In short: about 30 marks of every paper come from this unit; the most asked topic is Multiplication Algorithms (13 times); 19 questions came back in a later year. The latest ones are listed below; on the page you can filter them by 2-mark or long questions, topic and repeats.
Unit 2 previous year questions
- Explain the working of carry look-ahead adder with the help of an example. (2 marks, 2026, Adders & Look-Ahead Carry)
- Explain signed number multiplication using Booth’s Algorithm. Multiply A × B where A= –5 and B=3 using Booth’s Algorithm. (2 marks, 2026, Multiplication Algorithms)
- Explain floating-point representation and its components. (2 marks, 2026, Floating Point Arithmetic & IEEE 754)
- Multiply the following numbers using Array Multiplier technique: A = 1101, B = 1011 (7 marks, 2026, Multiplication Algorithms)
- Explain the design of an Arithmetic and Logic Unit. Describe various arithmetic and logical operations performed by ALU. (7 marks, 2026, ALU Design)
- Explain floating point arithmetic operations. Perform floating point addition using IEEE 754 format for (5.75)₁₀ + (–2.5)₁₀. (7 marks, 2026, Floating Point Arithmetic & IEEE 754)
- Explain floating point representation? (2 marks, 2025, Floating Point Arithmetic & IEEE 754)
- Discuss the role of ALU in a processor? (2 marks, 2025, ALU Design)
- Describe Booth's algorithm for signed binary multiplication. Explain how it optimizes the multiplication process and discuss its advantages over traditional methods? (7 marks, 2025, Multiplication Algorithms)
- Explain the concept of look-ahead carry adders in digital arithmetic circuits. Compare and contrast their performance with conventional ripple carry adders, highlighting advantages and disadvantages? (7 marks, 2025, Adders & Look-Ahead Carry)
- Discuss the process of signed operand multiplication in digital arithmetic circuits? (7 marks, 2025, Multiplication Algorithms)
- Name the different types of multipliers. (2 marks, 2024, Multiplication Algorithms)
Most asked Unit 2 topics
- Multiplication Algorithms – asked 13 times
- Floating Point Arithmetic & IEEE 754 – asked 9 times
- Adders & Look-Ahead Carry – asked 8 times
Unit 2 question pattern
- 2-mark questions: 12 asked in 2020–2026
- 7-mark questions: 9 asked in 2020–2026
- 10-mark questions: 12 asked in 2020–2026
- About 30 marks from Unit 2 in every paper
- 19 questions were asked again in a later year
Unit 2 questions year by year
- 2026: 6 Unit 2 questions asked (27 marks across that year's papers)
- 2025: 5 Unit 2 questions asked (25 marks across that year's papers)
- 2024: 4 Unit 2 questions asked (23 marks across that year's papers)
- 2023: 3 Unit 2 questions asked (30 marks across that year's papers)
- 2022: 5 Unit 2 questions asked (34 marks across that year's papers)
- 2021: 5 Unit 2 questions asked (34 marks across that year's papers)
- 2020: 5 Unit 2 questions asked (34 marks across that year's papers)