most of us are likely aware of the major multitasking operating systems or os's
that manage our computers these complex pieces of software are designed for
powerful hardware and easily capable of running many programs at once since
their OS can prioritize Hardware task
requests known as system calls and allocate them processing time or memory
space as needed and chances are you've already chosen a favorite one but what
makes things like pocket size devices tick anyhow or what about the unique
electronic systems like the ones found in cars or even the hive-minded robots
that will eventually defeat Humanity don't these things need some sort of
operating system too yes they do and they actually differ from PC os's in a
few key ways we'll start with the ones designed for battery powered devices
like phones and tablets these might seem like they should be very different from
a desktop OS but thanks to the incredible performance of modern mobile
processors top mobile os's including iOS
and Android are multitasking operating systems capable of balancing multiple
background tasks and user input with Grace and Poise usually but it hasn't
always been this way in the early days of mobile Computing battery life and
performance were much less plentiful than they are today so the embedded
operating systems were King examples of which being Windows CE and pomos they
had limited functionality and could only handle one task at a time so by today's
standards they'd be considered pretty useless on a phone but my grandpy tells
me they were essential for these strange devices called
pdas but seriously even though the days of pocket PCS are behind us embedded
os's are still essential for many other
low powerered limmited functionality devices like media players video cameras
GPS units fancy dish washers or even the
networking router which is currently allowing you to enjoy this video at
certain times though such as when dealing with heavy machinery A System's
need to process requests quickly and
reliably Will trump its need to be
flexible and easy to program for in these instances programmers turn to
realtime operating systems a special
variety of embedded OS which like their name suggests use specially written
scheduling algorithms to ensure that Vital Information is processed in
designated orders and within specified time Windows instead of dynamically
switching between processes based on resource availability they're very
similar to other embedded os's in that they are often developed in tandem with
a dedicated piece of Hardware intended to run them and they can be found on
shipping stations robotic assembly lines and medical equipment in our vehicles
and they're very useful for ensuring that our automatic emergency breake
doesn't get stuck behind our seat warmer activation in an OS processing que as we
carine directly towards a brick wall Switching gears entirely there's another
car thing for you there are operating systems that try to avoid normal
Hardware constraints by utilizing network connections to run virtual os's
like servers which can operate several systems simultaneously or systems that
pool resour between even many more machines at a time the first style
templated systems use hypervisors to create several virtual machine images on
one extremely high-powered systems which users can then access via a network
these machines appear from the outside to be their own dedicated pieces of
Hardware but they're not and a second style distributed systems combine and
then allocate the resources of many physical machines even over the internet
to solve problems like calculating protein folding to help fight diseases
uh Shameless plug for the lonus tech tips folding team by the way speaking of
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