Interrupt Microcontroller Quiz

What is an interrupt in a microcontroller?

• An interrupt in a microcontroller is a signal that temporarily stops the normal program execution and transfers control to a specific interrupt service routine.

• An interrupt in a microcontroller is a signal that only occurs during startup.

• An interrupt in a microcontroller is a signal that has no effect on the program execution.

• An interrupt in a microcontroller is a signal that permanently stops the normal program execution.

What is the purpose of an interrupt vector table?

• To store the addresses of main program routines.

• To store the addresses of subroutines for different types of interrupts.

• To store the addresses of interrupt service routines (ISRs) for different types of interrupts.

• To store the addresses of system calls for different types of interrupts.

How are interrupt priorities determined in a microcontroller?

• By randomly selecting interrupt sources

• By assigning the same priority level to all interrupt sources

• By using a round-robin scheduling algorithm

• By assigning priority levels to each interrupt source

What is interrupt latency in a microcontroller?

• The interrupt latency in a microcontroller is the time it takes for the microcontroller to process and handle multiple interrupts simultaneously.

• The interrupt latency in a microcontroller is the time it takes for the microcontroller to switch between different interrupt priority levels.

• The interrupt latency in a microcontroller is the delay between the occurrence of an interrupt and the execution of the corresponding interrupt service routine (ISR).

• The interrupt latency in a microcontroller is the time it takes for the microcontroller to power on and initialize after an interrupt occurs.

What is an interrupt service routine (ISR)?

• An interrupt service routine (ISR) is a type of computer virus.

• An interrupt service routine (ISR) is a function or subroutine in an operating system or firmware that is responsible for handling interrupts generated by hardware or software.

• An interrupt service routine (ISR) is a hardware component that generates interrupts.

• An interrupt service routine (ISR) is a software program that runs continuously in the background.

Which type of interrupt has the highest priority?

• Non-Maskable Interrupt (NMI)

• External Interrupt

• Software Interrupt

• Maskable Interrupt (MI)

What happens when an interrupt occurs in a microcontroller?

• The microcontroller shuts down completely.

• The interrupt is ignored and the main program continues execution.

• The current execution of the main program is paused and the microcontroller jumps to an interrupt service routine (ISR) to handle the interrupt.

• The microcontroller switches to a different program.

How is the interrupt vector table organized?

• As an array of function pointers

• As a linked list

• As a binary tree

• As a hash table

What is the purpose of enabling and disabling interrupts?

• To increase the speed of interrupt handling.

• To prevent the occurrence of interrupts.

• To prioritize the handling of interrupts.

• To control the flow of interrupts in a system.

How can interrupt latency be minimized in a microcontroller?

• By optimizing the ISR code, prioritizing interrupts, reducing interrupt nesting, and using hardware features like interrupt preemption and tail-chaining.

• By disabling all interrupts except the highest priority one

• By using software delays in the ISR code

• By increasing the interrupt nesting level