Digital Electronic Circuits MCQ Questions Answers Electronics Engineering

Digital Electronic Circuits – Electronics & Communication Engineering MCQ Questions Answers ECE

1) The principle of locality of reference justifies the use of

a) interrupts

b) DMA

c) virtual memory

d) cache memory

View Answer
Option – d)

2) Which one of the following is loaded in the main memory by the bootstrap loader ?

a) system data

b) User program


d) Parts of DOS

View Answer
Option – c)

3) The software that transfers the object program from secondary memory to the main memory is called

a) assembler

b) loader

c) linker

d) task builder

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Option – b)

4) If a RAM has 34bits in its MAR and 16 bits in its MDR, then its capacity will be

a) 32 GB

b) 16 GB

c) 32 MB

d) 16 MB

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Option – a)

5) Which one of the following is not a linear data structure ?

a) Array

b) Linked list

c) Stack

d) Tree

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Option – d)

6) The contents of accumulator in an 8085 microprocessor are altered after the execution of the instruction ?

a) CMP C

b) CPI 3A


d) ORA A

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Option – c)

7) The first machine cycle of an instruction is always

a) A memory read cycle

b) A fetch cycle

c) An I/O read cycle

d) A memory write cycle

View Answer
Option – b)

8) What is the depth of a complete binary tree with ‘n’ nodes ?

a) log2(n + 1) – 1

b) log2 (n – 1) + 1

c) log2 (n) + 1

d) log2(n) – 1

View Answer
Option – d)

9) Which block replacement algorithm is not generally used cache operation ?




d) Random

View Answer
Option – b)

10) Which one of the following is not associated with a logic analyzer ?

a) Dalayed state

b) Delayed sweep

c) Disassemble

d) Pre-triggering

View Answer
Option – b)