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`What is an embedded operating system? Definition from WhatIs.com
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`DEFINITION
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`embedded operating system
`Posted by: Margaret Rouse WhatIs.com
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`Contributor(s): Brien Posey, Ivy Wigmore
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`An embedded operating system (OS) is a specialized operating system designed to perform a specific task for a device that
`is not a computer. An embedded operating system’s main job is to run the code that allows the device to do its job. The
`embedded OS also makes the device’s hardware accessible to the software that is running on top of the OS.
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`An embedded system is a computer that supports a machine. Examples include computers in cars, traffic lights, digital
`televisions, ATMs, airplane controls, point of sale (POS) terminals, digital cameras, GPS navigation systems, elevators,
`digital media receivers and smart meters, among many other possibilities.
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`Examples of embedded OS
`Many modern electronic devices are based on Arduino or Raspberry PI. Raspberry PI devices often run an ARM-based
`Linux kernel, but there are actually a number of different operating systems that can be run on Raspberry PI devices.
`Arduino devices have a much more primitive embedded operating system that acts as little more than a boot loader and a
`command interpreter.
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`How an embedded OS works
`In contrast to an operating system for a general-purpose computer, an embedded operating system can be quite limited in
`terms of function – depending on the device in question, the system may only run a single application. However, that single
`application is crucial to the device’s operation, so an embedded OS must be reliable and able to run with constraints on
`memory, size and processing power. An embedded operating system allows the device to do its job. In the case of
`Raspberry PI for example, an SD card acts as the device’s hard drive and contains the code that runs on the device.
`Because the SD card is removable, its contents can be modified on demand. Because the embedded OS makes the
`device’s hardware accessible to the application that is running on top of the OS, hardware components such as USB ports
`and HDMI ports can be leveraged by the applications running on the device.
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`Embedded vs. Non-Embedded
`An embedded operating system is integrated into a device, and depending on the device, may reside on a chip. Embedded
`operating systems tend to be limited in scope with regard to what they can do. In contrast, a non-embedded operating
`system tends to run from a hard disk or an SSD. Non-embedded operating systems such as Windows 10 or Mac OS tend
`to be user configurable and upgradable, and they are usually designed for general purpose use.
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`This was last updated in May 2019
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`What is an embedded operating system? Definition from WhatIs.com
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`What is an embedded operating system? Definition from WhatIs.com
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