N2113114 · 60 marks · 2 hrs
Computer Organization & Architecture
Exam: 25 Nov 2026 · 14:30-16:30 · Mumbai University, B.E. AI & DS Sem III (NEP-2020).
Units & topics
| Unit | Title & topics |
|---|---|
| Unit 1 | Computer Fundamentals Number conversion |
| Unit 2 | ALU Operations Non-restoring division, Booth's algorithm, IEEE 754 floating point |
| Unit 3 | Processor Organization and Control Unit Design 8086 architecture, Microprogrammed control unit, Hardwired vs Softwired CU, Horizontal vs Vertical microinstruction, Addressing modes of 8086 |
| Unit 4 | Memory Systems Organization Cache mapping, Memory hierarchy / characteristics, Associative memory |
| Unit 5 | I/O Organization I/O methods, ISA / PCI / USB buses, Bus arbitration |
| Unit 6 | Parallel Processing Pipeline hazards, Flynn's classification, 80386DX operation modes, Instruction pipeline |
Question papers
Scanned originals as printed. Open a paper for preview, or download the PDF.
Dec 2025 · QP 98169
60 marks · 2 hrs · verified — scanned original
May 2026 · QP 09161
60 marks · 2 hrs · verified — scanned original
Most-asked topics
How many questions each topic got in Dec 2025 and May 2026. History, not a prediction — nothing here is guaranteed to appear next.
| Topic | Dec 2025 | May 2026 | Total | Marks |
|---|---|---|---|---|
| Number conversion | 1 | 1 | 2 | 10 |
| Non-restoring division | 1 | 1 | 2 | 16 |
| Booth's algorithm | 1 | 1 | 2 | 14 |
| 8086 architecture | 1 | 1 | 2 | 16 |
| Cache mapping | 1 | 1 | 2 | 16 |
| Memory hierarchy / characteristics | 1 | 1 | 2 | 12 |
| Associative memory | 1 | 1 | 2 | 10 |
| I/O methods | 1 | 1 | 2 | 14 |
Question sets
Topic-wise question sets from the two papers — questions only.
COA — Topic-wise Question Sets (Dec 2025 + May 2026)
4 pages · Scanned university question papers, grouped by topic · Questions only — no answers
All questions — Dec 2025 + May 2026
29 questions, quoted as printed. No answers are published on this site.
| Q | Topic | Question | Marks | Paper |
|---|---|---|---|---|
| Q1a | Number conversion | Convert the following decimal number to Binary, Octal and Hexadecimal number. a) (345.35)₁₀ b) (818.55)₁₀. | 5 | coa-dec2025 |
| Q1b | Addressing modes of 8086 | Explain addressing modes of 8086 with suitable example. | 5 | coa-dec2025 |
| Q1c | Associative memory | Explain Associative memory with its usages. | 5 | coa-dec2025 |
| Q1d | ISA / PCI / USB buses | Explain ISA, PCI and USB buses. | 5 | coa-dec2025 |
| Q2a | Non-restoring division | Draw flowchart for non restoring division algorithm and implement for (13/3). | 8 | coa-dec2025 |
| Q2b | Memory hierarchy / characteristics | Explain memory hierarchy with diagrams and characteristics of memory. | 7 | coa-dec2025 |
| Q3a | Cache mapping | A computer has 64MB main memory and 32KB cache memory. Each line in cache stores 8bytes. Show the format for memory address for Direct and Associative mapping. | 8 | coa-dec2025 |
| Q3b | I/O methods | Explain and compare programmed I/O, interrupt-driven I/O, and DMA. | 7 | coa-dec2025 |
| Q4a | Microprogrammed control unit | Explain micro-programmed control unit with suitable diagram. | 8 | coa-dec2025 |
| Q4b | Pipeline hazards | Draw and explain the various pipeline hazards and method to resolve it. | 7 | coa-dec2025 |
| Q5a | 8086 architecture | Explain with suitable diagram Architecture of 8086 microprocessor. | 8 | coa-dec2025 |
| Q5b | Booth's algorithm | Multiply (12)₁₀ and (−5)₁₀ using Booth's algorithm. | 7 | coa-dec2025 |
| Q6a | Bus arbitration | Explain bus arbitration with examples. | 5 | coa-dec2025 |
| Q6b | Flynn's classification | Explain Flynn's classification. | 5 | coa-dec2025 |
| Q6c | Horizontal vs Vertical microinstruction | Differentiate horizontal and vertical microinstruction. | 5 | coa-dec2025 |
| Q1a | Number conversion | Convert (74.25)₁₀ and (47.50)₁₀ into hexadecimal numbers and perform addition on converted numbers. | 5 | coa-may2026 |
| Q1b | Instruction pipeline | Explain instruction pipeline. | 5 | coa-may2026 |
| Q1c | Memory hierarchy / characteristics | Explain characteristics of memory. | 5 | coa-may2026 |
| Q1d | Associative memory | Explain Associative memory. | 5 | coa-may2026 |
| Q2a | IEEE 754 floating point | Convert (56.45)₁₀ into IEEE 754 floating point Single Precision format. | 8 | coa-may2026 |
| Q2b | Pipeline hazards | Explain different pipeline hazards. | 7 | coa-may2026 |
| Q3a | Non-restoring division | Draw flow chart for nonrestoring division algorithm and solve (15)₁₀ / (2)₁₀. | 8 | coa-may2026 |
| Q3b | I/O methods | Explain programmed IO and interrupt-driven data transfer methods. | 7 | coa-may2026 |
| Q4a | Cache mapping | Compare Direct, Associative, Set Associative Cache Mapping techniques. | 8 | coa-may2026 |
| Q4b | Hardwired vs Softwired CU | Compare Hardwired and Softwired control unit design techniques. | 7 | coa-may2026 |
| Q5a | 8086 architecture | Explain architecture of 8086 microprocessor. | 8 | coa-may2026 |
| Q5b | Booth's algorithm | Multiply (−8)₁₀ and (−3)₁₀ using Booth's algorithm. | 7 | coa-may2026 |
| Q6a | Flynn's classification | Explain Flynn's classification. | 8 | coa-may2026 |
| Q6b | 80386DX operation modes | Differentiate between different operation modes of 80386DX processor. | 7 | coa-may2026 |