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Some mobile devices are
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general-purpose
computing devices
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like tablets or smartphones.
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Other mobile devices like
fitness monitors, e-readers,
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and smartwatches, are designed
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to do a smaller set of tasks.
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General-purpose mobile
devices generally use
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a mobile operating system that's
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derived from other
operating systems.
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For example Android
is derived from Linux
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and iOS shares a lot of
core components with MacOS.
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So how are mobile
operating systems
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different from the OSs
that they're based on?
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Mobile devices run
on batteries that
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have to be recharged
or replaced on
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a regular basis and
you want the device
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to last as long as
possible between charges.
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So mobile operating systems are
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optimized to use as
little power as possible,
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for example, by removing
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OS features and applications
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that the mobile
device doesn't need.
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We also use motion, touch,
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and voice to interact
with mobile devices in
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very different ways from
desktop or server computers.
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This requires adding
device drivers
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and support to the
mobile operating system.
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More specialized mobile devices
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like fitness
trackers, e-readers,
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and GPS devices,
often use custom
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OSs that are optimized
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for what the device
is designed to do.
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These devices are even
more slimmed down to run
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on very minimal hardware with
very minimal battery power.
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They might also be built using
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specialized chips
and peripherals,
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which more general-purpose
operating systems
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don't know how to run on.
2891
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