WEBVTT

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whether we're talking about your PC your car or even a really fancy coffee maker

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anything with a microprocessor needs some kind of operating system in order

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to do anything more useful than sit there and look pretty but what do they

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do exactly well in a nutshell an operating system is a piece of software

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that acts as a liaison between A System's Hardware through some other

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software bits called the kernel and drivers and the software applications

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through which the user that's you interacts with the aforementioned

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hardware and while all operating systems have on a fundamental level the same

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objectives protecting user security by preventing malicious code from

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exploiting your Hardware allocating system resources like memory to complete

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the user's required tasks as efficiently as possible and in the case of more

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complex ones providing a platform on which compatible programs can run and

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interact with the user be it through a keyboard touchcreen or even a steering

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wheel there are two fundamental ways that these tasks can be managed let's

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start with an example that you're likely to find in your pocket no not that your

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phone if you're a caveman it's possible

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that you're still using a single tasking operating system these as you might have

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cleverly figured out are only capable of running a single program at a time which

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is one of the reasons you couldn't browse your contacts while playing games

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on your old Nokia brick but hold on a second lonus I remember when my snake

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high score run was disrupted by a pesky phone call from my mother isn't that

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kind of multitasking actually that's called an

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interrupt in all operating systems even single tasking ones override less

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important functions when their environment changes so a real world

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example of this would be if a simple operating system like the one on your

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fancy coffee maker stopped a brewing cycle to give the user an alert to

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change the filter to a DRM approved or here's a good analogy if a car came

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barreling through the front of your house while you were cooking your

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brain's operating system knows only one

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of those things can be dealt with at a time so it tells you to turn off your

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cooking elements it saves the in progress state of your meal in your

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memory so you can come back to it later and then tells you to focus on all the

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screaming burning people in your living room until you can return to it so now

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let's move on to Modern multitasking operating system like Android and

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Windows these use a process called time

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sharing to split resources allowing more

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than one thing to be done at once or so

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it would appear let's use our Human Brain Analogy again where this time the

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doorbell and your phone both ring at the

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same time both tasks with similar

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priority rankings that cannot be completed one at a time without ending

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up with a voicemail or a package delivery notice on your door so you

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answer your phone and say hello just a second you open the door to find out

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it's a sexy DHL driver continue your phone conversation while The Courier

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prepares the paperwork then you sign for the package close the door and continue

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your conversation if you're honest with yourself you haven't really devoted your

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full proper attention to either of these tasks but by regularly scheduling

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interrupts remember that word from before to each of these tasks you can

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devote resources as needed to each of them so they appear to be being

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completed at the same time and multitasking operating systems work in

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much the same way but of course this video mostly ignores the actual topic I

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meant to address when it was originally scripted which is what are some of the

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different types of operating systems and how do they differ so let me know in the

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comments below if that's something you'd like to see speaking of things you might

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want to see my face after I shave with

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Dollar Shave Club

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razors oh what you want me to actually tell you what Dollar Shave Club is I

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thought it was pretty self-explanatory at this point you get razors and other

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bathroom supplies shipped directly to your door for only a few bucks a month

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they're high quality products for way less than what you would pay at the

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store so they got the razors they got the Dr Carver shave butter which goes on

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clear they got their one wipe Charlies which are peppermint scented face wipes

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just just kidding they're for your butt wipes for men they've got their post

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shave moisturizer and travel sizes as well there's a variety of razors all the

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way up to the six blade Executives and did I say Executives no no we don't have

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six blade Executives here just six blade executive razors so there's no vibrating

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handles or other nonsense like that just highquality razors and head over to

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dollarshaveclub.com Linus to sign up and join the club it's available in the US

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Canada Australia and New Zealand so

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that's pretty much it guys thanks for watching like this video if you liked it

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dislike it if you thought it blue chunks leave a comment if you have suggestions

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for future fastest possible and as always don't forget to subscribe and

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follow and all that noise