Microcontroller Mcqs

Our Collection of Microcontroller questions and answers focuses on all areas of Multiprocessors covering a collection of most authoritative and best reference books on Microcontroller. One should spend 1 hour daily for 2-3 months to learn and assimilate Microcontroller comprehensively.

1.
Unlike micro processors, micro controllers make use of batteries because they have:

High power dissipation

Low power consumption

Low voltage consumption

Low current consumption

2.
What is the order decided by a processor or the CPU of a controller to execute an instruction?

Decode,fetch,execute

Execute,fetch,decode

Fetch,execute,decode

Fetch,decode,execute

3.
How are micro controllers classified on the basic of internal bus width?

8,16,32,64 bits

4,8,16,32 bits

8,16 bits

4,16,32 bits

4.
How is the performance and the computer capability affected by increasing its internal bus width?

It increases and turns better

It decreases

Remains the same

Internal bus width don’t affect the performance in any way

5.
Abbreviate CISC and RISC.

Complete Instruction Set Computer, Reduced Instruction Set Computer

Complex Instruction Set Computer, Reduced Instruction Set Computer

Complex Instruction Set Computer, Reliable Instruction Set Computer

Complete Instruction Set Computer, Reliable Instruction Set Computer

6.
Give the names of the buses present in a controller for transferring data from one place to another?

Data bus, address bus

Data bus

Data bus, address bus, control bus

Address bus

7.
What is the file extension that is loaded in a micro controller for executing any instruction?

.doc

.c

.txt

.hex

8.
What are the most appropriate criterion for choosing the right micro controller of our choice?

Speed

Availability

Ease with the product

All of the mentioned

9.
Why micro controllers are not called general purpose devices?

Because they are based on VLSI technology

Because they are not meant to do a single work at a time

Because they are cheap

Because they consume low power

11.
Why do we connect a capacitor between the Vref and the Gnd pin?

To remove the leakage

To ensure more current at that place

To make more Vref

To make Vref stable and also to increase the precision of the ADC

12.
Which of the following are the registers that are used for controlling the ADC conversion in the AVR?

ADCSRA

ADMUX

SPIOR

All of the mentioned

15.
In a DAC the input is ______ and the output is ______

Analog, digital

Current, voltage

Digital, analog

Analog, current

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