Microcontroller Quiz

What is a stack in a microcontroller?

• A type of memory that stores data in a Last-In-First-Out (LIFO) manner

• A type of memory that stores data in a First-In-First-Out (FIFO) manner

• A type of register that stores data temporarily

• A type of flag that indicates the status of the microcontroller

What is the purpose of the stack in a microcontroller?

• To store data temporarily

• To store program counter values

• To store interrupt vector table

• To store program code

How does the stack operate in a microcontroller?

• It pushes data onto the stack and then pops it off

• It pushes data onto the stack but does not pop it off

• It pops data off the stack but does not push it on

• It does not push or pop data onto the stack

What happens when the stack is full and another value is pushed onto it?

• The value is stored in a separate memory location

• The value is discarded

• The stack overflows

• The stack underflows

How is the stack initialized in a microcontroller?

• It is initialized by the programmer

• It is initialized by the microcontroller itself

• It is not initialized

• It is initialized by the compiler

What is the maximum size of the stack in an 8051 microcontroller?

• 128 bytes

• 256 bytes

• 512 bytes

• 1024 bytes

What happens when the stack pointer (SP) is incremented?

• The stack pointer points to the next available location on the stack

• The stack pointer points to the previous location on the stack

• The stack pointer points to the top of the stack

• The stack pointer points to the bottom of the stack

What is the purpose of the stack pointer (SP) in a microcontroller?

• To point to the top of the stack

• To point to the bottom of the stack

• To point to the next available location on the stack

• To manage the stack operations

What is an interrupt in a microcontroller?

• A signal that indicates the completion of an instruction

• A signal that requests the microcontroller to perform a specific task

• A signal that resets the microcontroller

• A signal that shuts down the microcontroller

What is the purpose of an interrupt service routine (ISR)?

• To handle the interrupt request

• To ignore the interrupt request

• To reset the microcontroller

• To shut down the microcontroller