1.give some examples about I/O components in an embedded system 2.Describe hardware components for a mini embedded...

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Electrical Engineering

1.give some examples about I/O components in an embeddedsystem
2.Describe hardware components for a mini embedded system withOS
3.What are embedded system basic requirements?
4.What is ARM processor architecture?

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Embedded system is defined as a way of working performing ororganizing one or many tasks according to a fixed set of rules oran arrangement in which all the units assemble and work togetheraccording to the program or plan Examples of embedded systems area watch and a washing machineAn embedded system is a system that has software embedded incomputer hardware It makes a system dedicated to a specific partof an application or product of a larger system Depending on theapplication the embedded system may be programmable ornonprogrammableExamples of embedded systems include various products such aswashing machines microwave ovens cameras printers andautomobiles They use microprocessors and microcontrollers as wellas specially designed processors such as digital signal processorsDSPAll embedded systems include some form of input and output IOoperationsExamples of embedded systems built explicitly to deal with IOdevices Cell phone pager and a handheld MP3 playerIO operations are interpreted differently depending on theviewpoint taken and place different requirements on the level ofunderstanding of the hardware detailsInterfaces between a device and the main processor occur in twoways port mapped and memory mappedDMA controllers allows data transfer bypassing the mainprocessorIO subsystems must be flexible enough to handle a wide range ofIO devicesUniform IO hides device peculiarities from applicationsThe IO subsystem maintains a driver table that associatesuniform IO calls with driverspecific IO routinesThe IO subsystem maintains a device table and forms anassociation between this table and the driver tableEmbedded System HardwareAs with any electronic system an embedded system requires ahardware platform on which it performs the operation Embeddedsystem hardware is built with a microprocessor or microcontrollerThe embedded system See Answer

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