Question 1
(a)
Explain the Register Transfer Language with block diagram.
3 Marks
(b)
Explain three state bus buffer.
4 Marks
(c)
Explain shift micro operations and draw 4-bit combinational circuit shifter.
7 Marks
Gujarat Technological UniversitySummer 2025 Examination
GTU 3140707 Computer Organization & Architecture (COA) Summer 2025 Paper Solution & PDF
B.E. · Computer Engineering · Semester 4 · Subject Code: 3140707
Total Marks70 MarksExternal theory exam
Passing Marks23 Marks33% minimum cutoff
Exam Duration2.5 Hours10:30 AM – 1:00 PM
Paper Structure5 QuestionsWith internal OR choices
Question 2
(a)
List and explain any three register reference instruction.
3 Marks
(b)
Explain instruction format with its types.
4 Marks
(c)
Draw and explain Common Bus System for basic computer register.
7 Marks
OR OPTION
(c)
Explain the basic working principle of the Control Unit with timing diagram.
7 Marks
Question 3
(a)
List out any three register of basic computer.
3 Marks
(b)
State various phases of instruction cycle.
4 Marks
(c)
Write an assembly level program to find average of 10 numbers stored at consecutive location in memory.
7 Marks
OR OPTION
(a)
Convert following hexadecimal number into decimal, octal and binary. 1) 4A
3 Marks
(b)
Explain any 4 addressing modes with example.
4 Marks
(c)
What is an Interrupt Cycle? Draw and explain flow chart of it.
7 Marks
Question 4
(a)
Explain register stack.
3 Marks
(b)
Write an assembly language program to Add two double precision numbers.
4 Marks
(c)
Explain the working of Second Pass Assembler with its flowchart.
7 Marks
OR OPTION
(a)
What is address sequencing?
3 Marks
(b)
Write short note on subroutine.
4 Marks
(c)
Draw and explain flow chart for multiplication program.
7 Marks
Question 5
(a)
Explain various types of interrupts.
3 Marks
(b)
What are status register bits? Draw and explain the block diagram showing all status registers.
4 Marks
(c)
Write a note on asynchronous data transfer.
7 Marks
OR OPTION
(a)
What is Memory Interleaving?
3 Marks
(b)
Differentiate RISC and CISC.
4 Marks
(c)
Explain Flynn’s classification for computers.
7 Marks
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About this Examination Paper & Attribution
Official Gujarat Technological University (GTU) examination paper and step-by-step solutions for Computer Organization & Architecture (COA) (Summer 2025, B.E. · Computer Engineering, Sem 4). Features complete 70-mark regular & remedial examination pattern, official marking distribution across all 5 questions, and direct 1-click official PDF download.
Transcribed for student exam preparation from Gujarat Technological University official examination archives. Questions, syllabus guidelines, and curriculum marking schemes remain the intellectual property of Gujarat Technological University.