whether we're talking about your PC your car or even a really fancy coffee maker
anything with a microprocessor needs some kind of operating system in order
to do anything more useful than sit there and look pretty but what do they
do exactly well in a nutshell an operating system is a piece of software
that acts as a liaison between A System's Hardware through some other
software bits called the kernel and drivers and the software applications
through which the user that's you interacts with the aforementioned
hardware and while all operating systems have on a fundamental level the same
objectives protecting user security by preventing malicious code from
exploiting your Hardware allocating system resources like memory to complete
the user's required tasks as efficiently as possible and in the case of more
complex ones providing a platform on which compatible programs can run and
interact with the user be it through a keyboard touchcreen or even a steering
wheel there are two fundamental ways that these tasks can be managed let's
start with an example that you're likely to find in your pocket no not that your
phone if you're a caveman it's possible
that you're still using a single tasking operating system these as you might have
cleverly figured out are only capable of running a single program at a time which
is one of the reasons you couldn't browse your contacts while playing games
on your old Nokia brick but hold on a second lonus I remember when my snake
high score run was disrupted by a pesky phone call from my mother isn't that
kind of multitasking actually that's called an
interrupt in all operating systems even single tasking ones override less
important functions when their environment changes so a real world
example of this would be if a simple operating system like the one on your
fancy coffee maker stopped a brewing cycle to give the user an alert to
change the filter to a DRM approved or here's a good analogy if a car came
barreling through the front of your house while you were cooking your
brain's operating system knows only one
of those things can be dealt with at a time so it tells you to turn off your
cooking elements it saves the in progress state of your meal in your
memory so you can come back to it later and then tells you to focus on all the
screaming burning people in your living room until you can return to it so now
let's move on to Modern multitasking operating system like Android and
Windows these use a process called time
sharing to split resources allowing more
than one thing to be done at once or so
it would appear let's use our Human Brain Analogy again where this time the
doorbell and your phone both ring at the
same time both tasks with similar
priority rankings that cannot be completed one at a time without ending
up with a voicemail or a package delivery notice on your door so you
answer your phone and say hello just a second you open the door to find out
it's a sexy DHL driver continue your phone conversation while The Courier
prepares the paperwork then you sign for the package close the door and continue
your conversation if you're honest with yourself you haven't really devoted your
full proper attention to either of these tasks but by regularly scheduling
interrupts remember that word from before to each of these tasks you can
devote resources as needed to each of them so they appear to be being
completed at the same time and multitasking operating systems work in
much the same way but of course this video mostly ignores the actual topic I
meant to address when it was originally scripted which is what are some of the
different types of operating systems and how do they differ so let me know in the
comments below if that's something you'd like to see speaking of things you might
want to see my face after I shave with
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razors oh what you want me to actually tell you what Dollar Shave Club is I
thought it was pretty self-explanatory at this point you get razors and other
bathroom supplies shipped directly to your door for only a few bucks a month
they're high quality products for way less than what you would pay at the
store so they got the razors they got the Dr Carver shave butter which goes on
clear they got their one wipe Charlies which are peppermint scented face wipes
just just kidding they're for your butt wipes for men they've got their post
shave moisturizer and travel sizes as well there's a variety of razors all the
way up to the six blade Executives and did I say Executives no no we don't have
six blade Executives here just six blade executive razors so there's no vibrating
handles or other nonsense like that just highquality razors and head over to
dollarshaveclub.com Linus to sign up and join the club it's available in the US
Canada Australia and New Zealand so
that's pretty much it guys thanks for watching like this video if you liked it
dislike it if you thought it blue chunks leave a comment if you have suggestions
for future fastest possible and as always don't forget to subscribe and
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