Question 1
(a)
List the basic computer data-types.
3 Marks
(b)
List the arithmetic micro-operations supported by a basic computer.
4 Marks
(c)
Explain r’s complement and r-1’s complement with examples for two different values of r.
7 Marks
Gujarat Technological UniversitySummer 2026 Examination
GTU 3140707 Computer Organization & Architecture (COA) Summer 2026 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 the names of registers within a basic computer.
3 Marks
(b)
List the logical operations supported by a basic computer.
4 Marks
(c)
Discuss the associative memory.
7 Marks
OR OPTION
(c)
Explain the sequence of micro-operations required to load the value from an address in the memory.
7 Marks
Question 3
(a)
Explain the micro-instruction format with diagram.
3 Marks
(b)
Write a program to load an integer from address 3000h and multiply it by 32 using shift operations. Store the result at address 3002h.
4 Marks
(c)
Discuss addressing modes of instructions.
7 Marks
OR OPTION
(a)
Analyze the role of control unit in instruction execution.
3 Marks
(b)
Show the use of JNZ instruction in an example of assembly program.
4 Marks
(c)
Categorize and explain instruction based on number of bytes.
7 Marks
Question 4
(a)
In case the speed of processor is 1Mhz. How long will a sequence of following instructions take at least? Give your answer in milliseconds. LDA 2100H MOV B,A LDA 2101H ADD A,B STA 3000H HLT
3 Marks
(b)
Write assembly program to add two BCD numbers stored in memory.
Store the result at address 3000h.
4 Marks
(c)
Explain the usefulness of priority interrupt with appropriate example.
7 Marks
OR OPTION
(a)
An instruction in assembly program is written as MOV CX, 302001h. What is the size of address lines in this computer?
3 Marks
(b)
Draw the circuit diagram for half – adder.
4 Marks
(c)
Explain the sequence of asynchronous data transfer.
7 Marks
Question 5
(a)
What is arithmetic pipelining?
3 Marks
(b)
Draw and mark the details in the IEEE-754 floating point format.
4 Marks
(c)
Discuss various characteristics of multiprocessor system.
7 Marks
OR OPTION
(a)
What are different architectures as suggested by Flynn’s taxonomy?
3 Marks
(b)
Draw only the flowchart for Booths’ multiplication algorithm.
4 Marks
(c)
Discuss in brief the concept of inter-processor communication and synchronization.
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 2026, 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.