Interrupt for PIC programming

What is the alternative to interrupts in the MCU world?

• Hardware

• Polling

• Software

• Interrupts

Which bit in the INTCON register is responsible for enabling and disabling interrupts globally?

• D7

• A3

• B5

• C2

What is used to place code at a specific ROM address in C18 compiler?

• #ifdef

• #define

• #include

• #pragma code

Which interrupt source has three bits to control its operation?

• CCP2

• ADC

• Timer 1

• INT0

What is the advantage of interrupts over polling?

• Interrupts check all devices in a round-robin fashion

• Polling avoids tying down the microcontroller

• Polling is faster than interrupts

• Interrupts can serve many devices based on priority

Which register is used to enable and disable the Timer0 interrupt and external hardware interrupt 0 (INT0)?

• INTEDG

• PORTB

• INTCON2

• INTCON

What is the function of the INT0IE bit in the PIC18?

• Enable INT0

• Enable Timer0

• Enable Timer1

• Enable Timer2

Which interrupt is positive (rising) edge-triggered in PIC18?

• INT0

• INT1

• INT2

• RBIF

What causes an interrupt in the PORTB-change interrupt?

• Only RB7 changes status

• Any pin changes status from HIGH to LOW or LOW to HIGH

• Only RB4 changes status

• All pins change status simultaneously

What is the task involving 2 switches controlling the flow of the traffic light?

• Detecting emergency condition and presenting continuous flow

• Turning off all lights

• Activating all lights at once

• Changing the color of one light