Unit - 3
Interrupt and its types
Q1) What is mean by interrupt?
A1) Interrupt:
Q2) What is mean by polling?
A2) Polling:
Q3) Write sequence of steps that occurs during interrupt processing.
A3)
Q4) Write a five source of interrupt and explain it.
A4)
Internal interrupts:
External interrupts:
Exceptions:
Software interrupt:
Non-maskable interrupt:
Enabling and disabling interrupts:
Q5) Write a short note on internal interrupt and External interrupt.
A5) Internal interrupts
External interrupts:
Q6) Write short note on non maskable interrupt.
A6)
Q7) What is mean by interrupt register.
A7) An interrupt control register, or ICR, is a hardware register in a computer chip used to configure the chip to generate interrupts—to raise a signal on an interrupt line—in response to some event occurring within the chip or a circuit connected to the chip.
An interrupt control register, or ICR, is a hardware register in a computer chip used to configure the chip to generate interrupts—to raise a signal on an interrupt line—in response to some event occurring within the chip or a circuit connected to the chip.
An Interrupt Control is usually used in Micro controllers to generate interrupts signals which tells the CPU to pause its current task and start executing another set of predefined activities.
ISR: ISR is an integrated intelligence and operations function that can be defined as a coordinated acquisition, processing, and provision of accurate, relevant, timely information and intelligence to support a commander's decision-making process.
Priority of Interrupts
Q8) Explain about 16x2 LCD and KEY.
A8) Interfacing 16 x 2 LCD and keyboard
Parts and components
Q9) Explain interfacing relay and buzzer.
A9) Interfacing relay and buzzer
Q10) Write principle behind interfacing LED.
A10) Principle behind Interfacing LED
Q11) Write a short note on external hardware interrupt.
A11)