Difference between revisions of "Exercise - Using Interrupts"
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<sidebar>Sidebar: What Is an Interrupt?</sidebar> | <sidebar>Sidebar: What Is an Interrupt?</sidebar> | ||
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| + | Interrupt are a way of grabbing the microcontroller's attention immediately. | ||
| + | It is often connected to a large number of peripheral input devices - switches, sensors, memory, timers etc. There are two broad ways in which one of these devices can be serviced by the microcontroller. | ||
| + | One of these is 'polling' - each device is 'asked' in turn if it has data to transfer to the controller. | ||
| + | The second is to allow the device to interrupt the task being carried out by the controller. | ||
| + | |||
| + | They are very widely used, both in microcontrollers and microprocessors. | ||
Revision as of 15:07, 11 August 2013
<sidebar>Sidebar: What Is an Interrupt?</sidebar>
Interrupt are a way of grabbing the microcontroller's attention immediately. It is often connected to a large number of peripheral input devices - switches, sensors, memory, timers etc. There are two broad ways in which one of these devices can be serviced by the microcontroller. One of these is 'polling' - each device is 'asked' in turn if it has data to transfer to the controller. The second is to allow the device to interrupt the task being carried out by the controller.
They are very widely used, both in microcontrollers and microprocessors.
