Types of interrupts
There are two types of interrupts which are as follows −
Hardware interrupts
The interrupt signal generated from external devices and i/o devices are made interrupt to CPU when the instructions are ready.
For example − In a keyboard if we press a key to do some action this pressing of the keyboard generates a signal that is given to the processor to do action, such interrupts are called hardware interrupts.
Hardware interrupts are classified into two types which are as follows −
Maskable Interrupt − The hardware interrupts that can be delayed when a highest priority interrupt has occurred to the processor.
Non Maskable Interrupt − The hardware that cannot be delayed and immediately be serviced by the processor.
Software interrupts
The interrupt signal generated from internal devices and software programs need to access any system call then software interrupts are present.
Software interrupt is divided into two types. They are as follows −
Normal Interrupts − The interrupts that are caused by the software instructions are called software instructions.
Exception − Exception is nothing but an unplanned interruption while executing a program. For example − while executing a program if we got a value that is divided by zero is called an exception.
