Electronics and Communication Engineering
GATE ECE Computer organization PYQs
Build your understanding with focused practice from past exam papers.
How to practice Computer organization
Attempt a question, record the concept and assumptions, then check the available answer. Rework mistakes after revising the relevant concepts. Topic tags can overlap; review the question context.
Questions 1–6 of 6. Imported answers require independent review unless marked reviewed.
Question 42
Open questionECMCQ2 marksNeeds review
The address of the first location of a 256 kilo byte (KB) memory is
. Choose the correct address of the last location of the memory.Your answerChoose one option.
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Open questionECNAT1 markNeeds review
A machine has a 32-bit architecture with 1-word long instructions. It has 24 registers and supports an instruction set of size 40. Each instruction has five distinct fields, namely opcode, two source register identifiers, one destination register identifier, and an immediate value. Assuming that the immediate operand is an unsigned integer, its maximum value is ________.
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 32
Open questionECMCQ2 marksNeeds review
The content of the registers are R₁ = 25H, R₂ = 30H and R₃ = 40H. The following machine instructions are executed.
PUSH{R₁}
PUSH{R₂}
PUSH{R₃}
POP{R₁}
POP{R₂}
POP{R₃}
After execution, the content of registers R₁, R₂, R₃ are
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 19
Open questionECNAT1 markNeeds review
In an 8085 microprocessor, the number of address lines required to access a 16 K byte memory bank is ______.
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 16
Open questionECMCQ1 markNeeds review
The clock frequency of an 8085 microprocessor is 5 MHz. If the time required to execute an instruction is 1.4 μs, then the number of T-states needed for executing the instruction is
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 45
Open questionECMCQ2 marksNeeds review
The following FIVE instructions were executed on an 8085 microprocessor.
MVI A, 33H
MVI B, 78H
ADD B
CMA
ANI 32H
The Accumulator value immediately after the execution of the fifth instruction is
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