Microcontrollers Interview Questions

Microcontrollers interview questions

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Total Questions: 10

1. Is ROM is used for storing data storage?

A. TRUE

B. FALSE

Correct Answer is : FALSE

2. What do you mean by micro in microcontroller?

A. Distance between 2 IC’s

B. Distance between 2 transistors

C. Size of a controller

D. Distance between 2 pins

Correct Answer is : Distance between 2 transistors

3. What is the bit size of the 8051 microcontroller?

A. 8-bit

B. 4-bit

C. 16-bit

D. 32-bit

Correct Answer is : 8-bit

4. Name the architecture and the instruction set for microcontroller?

A. Van- Neumann Architecture with CISC Instruction Set

B. Harvard Architecture with CISC Instruction Set

C. Van- Neumann Architecture with RISC Instruction Set

D. Harvard Architecture with RISC Instruction Set

Correct Answer is : Harvard Architecture with CISC Instruction Set

5. Number of I/O ports in the 8051 microcontroller?

A. 3 ports

B. 4 ports

C. 5 ports

D. 4 ports with last port having 5 pins

Correct Answer is : 4 ports

6. A microcontroller at-least should consist of:

A. RAM, ROM, I/O devices, serial and parallel ports and timers

B. CPU, RAM, I/O devices, serial and parallel ports and timers

C. CPU, RAM, ROM, I/O devices, serial and parallel ports and timers

D. CPU, ROM, I/O devices and timers

Correct Answer is : CPU, RAM, ROM, I/O devices, serial and parallel ports and timers

7. Unlike microprocessors, microcontrollers make use of batteries because they have:

A. high power dissipation

B. low power consumption

C. low voltage consumption

D. low current consumption

Correct Answer is : low power consumption

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

A. decode,fetch,execute

B. execute,fetch,decode

C. fetch,execute,decode

D. fetch,decode,execute

Correct Answer is : fetch,decode,execute

9. How are microcontrollers classified on the basis of internal bus width?

A. 8,16,32,64 bits

B. 4,8,16,32 bits

C. 8,16 bits

D. 4,16,32 bits

Correct Answer is : 4,8,16,32 bits

10. How are the performance and the computer capability affected by increasing its internal bus width?

A. it increases and turns better

B. it decreases

C. remains the same

D. internal bus width doesn’t affect the performance in any way

Correct Answer is : it increases and turns better

Microcontrollers interview questions