COMPUTER SCIENCE AND ENGINEERING
OPERATING SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The primary component of a computer that processes instructions.
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Control signal used to synchronise the internal components.
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A signal sent from a device or software to the processor requesting its attention.
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A temporary memory area within a device.
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Detailed explanation-1: -An interrupt is a signal emitted by a device attached to a computer or from a program within the computer. It requires the operating system (OS) to stop and figure out what to do next. An interrupt temporarily stops or terminates a service or a current process.
Detailed explanation-2: -An interrupt request (IRQ) is a signal sent to a computer’s processor to momentarily stop (interrupt) its operations. The signal is usually sent by a hardware device to interrupt the processor so the device gets some time to run its own operation.
Detailed explanation-3: -An interrupt is an event that alters the sequence in which the processor executes instructions. An interrupt might be planned (specifically requested by the currently running program) or unplanned (caused by an event that might or might not be related to the currently running program).
Detailed explanation-4: -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.
Detailed explanation-5: -The controller takes multiple interrupt sources and generates an IRQ and/or FIQ signal depending upon whether a particular interrupt source is enabled or disabled.