Microcontroller MCQ

Test your knowledge with important Microcontroller MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30+ more Microcontroller MCQs on Bissoy. Bissoy App

• Which of the two architecture saves memory?
  ক

  Harvard

  খ

  Von Neumann

  গ

  Harvard & Von Neumann

  ঘ

  None of the mentioned
• Which of the following supports CISC as well as Harvard architecture?
  ক

  ARM7

  খ

  ARM9

  গ

  SHARC

  ঘ

  None of the mentioned
• Why most of the DSPs use Harvard architecture?
  ক

  they provide greater bandwidth

  খ

  they provide more predictable bandwidth

  গ

  they provide greater bandwidth & also more predictable bandwidth

  ঘ

  none of the mentioned
• Which out of the following supports Harvard architecture?
  ক

  ARM7

  খ

  Pentium

  গ

  SHARC

  ঘ

  All of the mentioned
• Harvard architecture has _____________
  ক

  dedicated buses for data and program memory

  খ

  pipeline technique

  গ

  complex architecture

  ঘ

  all of the mentioned
• Which microcontroller doesn’t match with its architecture below?
  ক

  Microchip PIC- Harvard

  খ

  MSP430- Harvard

  গ

  ARM7- Von Neumann

  ঘ

  ARM9- Harvard
• Which architecture provides separate buses for program and data memory?
  ক

  Harvard architecture

  খ

  Von Neumann architecture

  গ

  None of the mentioned

  ঘ

  All of the mentioned
• Which architecture involves both the volatile and the non volatile memory?
  ক

  Harvard architecture

  খ

  Von Neumann architecture

  গ

  None of the mentioned

  ঘ

  All of the mentioned
• Which architecture is followed by general purpose microprocessors?
  ক

  Harvard architecture

  খ

  Von Neumann architecture

  গ

  None of the mentioned

  ঘ

  All of the mentioned
• How many types of architectures are available, for designing a device that is able to work on its own?
  ক

  3

  খ

  2

  গ

  1

  ঘ

  4
• Why microcontrollers are not called general purpose computers?
  ক

  because they have built in RAM and ROM

  খ

  because they design to perform dedicated task

  গ

  because they are cheap

  ঘ

  because they consume low power
• What is the most appropriate criterion for choosing the right microcontroller of our choice?
  ক

  speed

  খ

  availability

  গ

  ease with the product

  ঘ

  all of the mentioned
• What is the file extension that is loaded in a microcontroller for executing any instruction?
  ক

  .doc

  খ

  .c

  গ

  .txt

  ঘ

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

  data bus, address bus

  খ

  data bus

  গ

  data bus, address bus, control bus

  ঘ

  address bus
• Abbreviate CISC and RISC.
  ক

  Complete Instruction Set Computer, Reduced Instruction Set Computer

  খ

  Complex Instruction Set Computer, Reduced Instruction Set Computer

  গ

  Complex Instruction Set Computer, Reliable Instruction Set Computer

  ঘ

  Complete Instruction Set Computer, Reliable Instruction Set Computer
• How are the performance and the computer capability affected by increasing its internal bus width?
  ক

  it increases and turns better

  খ

  it decreases

  গ

  remains the same

  ঘ

  internal bus width doesn’t affect the performance in any way
• If we say microcontroller is 8-bit then here 8-bit denotes size of:
  ক

  Data Bus

  খ

  ALU

  গ

  Control Bus

  ঘ

  Address Bus
• What is the order decided by a processor or the CPU of a controller to execute an instruction?
  ক

  decode,fetch,execute

  খ

  execute,fetch,decode

  গ

  fetch,execute,decode

  ঘ

  fetch,decode,execute
• Unlike microprocessors, microcontrollers make use of batteries because they have:
  ক

  high power dissipation

  খ

  low power consumption

  গ

  low voltage consumption

  ঘ

  low current consumption
• A microcontroller at-least should consist of:
  ক

  RAM, ROM, I/O ports and timers

  খ

  CPU, RAM, I/O ports and timers

  গ

  CPU, RAM, ROM, I/O ports and timers

  ঘ

  CPU, ROM, I/O ports and timers
• What is the function of this instruction “WDTCTL = WDTPW | WDTCONFIG”, where **#define WDTCONFIG (WDTCNTCL|WDTSSEL)**
  ক

  it configures and sets the watchdog timer

  খ

  it stops the watchdog timer

  গ

  it sets the watchdog timer

  ঘ

  it configures and clears the watchdog timer
• Which of the following is correct about WDTCTL?
  ক

  it is guided against accidental writes that require a password

  খ

  a reset will occur if a value with an incorrect password is written to WDTCTL

  গ

  it is a 16 bit register

  ঘ

  all of the mentioned
• Which of the following is the basic functions of a timer?
  ক

  it can control the compare, capture mode

  খ

  it provided a time delay

  গ

  it can act as a counter

  ঘ

  all of the mentioned
• To improve the efficiency of an MSP430 based microcontroller, for one register
  ক

  there are two values for each addressing mode

  খ

  there is only one value for all addressing modes

  গ

  there are 4 values for four addressing modes

  ঘ

  there are 2 values for four addressing modes
• Why are optoisolators normally used between the microcontrollers and the ULN2803?
  ক

  to reduce the back emf

  খ

  to increase the current

  গ

  to increase the voltage

  ঘ

  to optimize the current
• Why are ULN2803 normally used between the microcontrollers and the relays?
  ক

  for increasing the voltage capability required by a relay

  খ

  for switching purposes

  গ

  for increasing the current capability required by a relay

  ঘ

  all of the mentioned
• Does 8255 have handshaking capability?
  ক

  depends on the conditions

  খ

  cant be said

  গ

  yes

  ঘ

  no
• The 8255 is a ______ chip.
  ক

  Digital to analog

  খ

  Input/Output

  গ

  Analog to Digital

  ঘ

  None of the mentioned
• What is the internal Vref of an Atmega32 series?
  ক

  3.3V

  খ

  2.56V

  গ

  5V

  ঘ

  all of the mentioned
• Which of the following bits are used for setting the data frame size?
  ক

  MPCM

  খ

  DOR

  গ

  U2X

  ঘ

  UCSZ0