 So this week we're looking at operating systems, and there's a lot of them So what happens when we turn on our computer for the first time even before we begin? Let's review you remember this guy. This guy is known as my mother board now What does the mother board do? Do you remember? Well, what it does is when I plug in my power supply to this guy this guy routes Electricity everywhere it sends it to this little chip here to the processor if I had one plugged in To any graphics cards or modems that I would have plugged in to this little beeper This is actually a little speaker telling me if something's wrong Well, what happens is all that electricity it continues to get routed until it hits my hard drive Now once it hits my hard drive This guy once it hits my hard drive this opens up what's known as my master boot record You don't need to remember that one But master boot record and the reason why is because what it does is it starts to go all right well? Where do I begin because remember the computer is very dumb it doesn't know where to start it just knows electricity I have electricity. That's about it. So suddenly this guy Let's see if you can get a little Starts to just do that a Lot just starts to wiggle not a lot But that turns on the master boot record and that starts to go Oh, all right. Well now I need to turn on what I call my bios It looks something like this and you can see Basically all it does is it's starting to fire all that electricity to all those different things If you have a DVD player if you have a CD Burner in your computer it turns those things on it turns on your hard drive if you happen to have external hard drives or any other Little peripherals IO devices that are connected to your computer. It turns those onto it starts to route the electricity This part this is not an operating system. This is simply just the it's waking up You can think about it in the same sense of how you wake up in the morning You know your your alarm goes off suddenly boom you're energized. What's your routine? Like we all have a routine for example I hit the snooze alarm and then I go back to bed and then I Eventually get out of bed and then I go to the shower. I take a shower I get out of shower I dry off and then the routine I have is my hair do all of my hair I do all my hair then I brush my teeth then I put on my deodorant then I leave the bathroom So that entire routine the same thing happens with a computer it goes through this entire bios until it's ready to turn on The operating system and again. I said we have tons of them. We have the Windows Systems for our Microsoft computers. I'm currently on a Windows machine. Then we have what's known as the OS X That's the Macintosh. That's the Apple's operating system depending on which one you have right now There are actually two there's the previous version known as the OS X Maverick and the current one the OS X Yosemite. That's actually something interesting If we think about Windows for example Windows uses a number system So currently we're on Windows 8 or Windows 7 if you've never upgraded and then we have Apple Apple uses things like Maverick Yosemite and if you look at the iOS for your iPhones That one goes through I believe we're on the iOS 6 now Whereas Android. Android all of a sudden you know used you know gingerbread man and Ice cream bar and they're on lollipop right now. So why do we have a difference between these? Why don't we use numbers and why do we have weird crazy words? Well, the reason behind that is simply It makes it easier to remember for example if Windows came out with Windows 8 and then as you guys probably know it If you have a windows 8, you know, you upgraded to something called 8.1 8.1 that sounds kind of you know generic and robot in Well, what we do in it is we give these major updates these major Version updates a new or a catch your name So instead of saying something like Android 4.5 we switch that over to something like Android lollipop Lollipop is just a little bit more entertaining and remember developers are people we're not computers We're developed where we're people so we like to you know have catch your things to do it You know code name lollipop versus Android 4.5 That's actually where those crazy names come from so When we start up our computer, that's exactly what's going on Hopefully you've already done this if you're watching on the YouTube's But one of the things that we Introduce is this idea of what's known as a GUI or a graphics user interface And what that does is it just allows us to? Interact with the computer, you know if we go back in time for a second We look at all those old-time computers. They were very DOS property They looked like this they looked very you know black screen green or white text and you type Into there. There was no thing. There's no such thing as a mouse back then The graphic user interface just gives us a little bit of that Control and we get to personalize it as we see fit in fact I encourage you guys all to personalize your computers your Your phones the reason why is that's actually a good way to become a little bit better at how to use the computer You know something is changing your background Once you know how yeah, it's not so scary anymore. It's like changing your oil So this is a good example. This is my desktop at home. Don't judge it. It's actually kind of clean It's got a nice little background. It's got a nice wallpaper is what we like to call it But you see we break down into really a few different sections. The first is this top portion Those are known as my shortcut icons now a shortcut icon shortcut icon Isn't the program and we'll take a look at that a little later on but it's not actually the program It's what I call. Oh, it's what is called a shortcut It goes to that part in your computer where the program actually resides again We'll take a look at that a little later then down below that kind of Wide bar you see on the bottom that's known as my task bar And that's actually where all of my currently running programs currently reside and you can see we actually have a few of these So I've got Microsoft Word running and I've got PowerPoint running and I've got Google Chrome running and Inter my Windows Explorer then we have a few others I've got Winamp and steam for my video gaming on no you don't get to have my username But I have those running In the background. Oh then we've also got my start menu and that's actually a very important thing That kind of controls everything on the computer. That's where I can get access to every program that I have installed Then over here over on the far right. We actually have this as known as my notification area Sometimes programs we have running. They don't actually appear on the taskbar. They just have They run in the background a little bit For example, one of the programs I have running is known as flux Which will change kind of the color tone of my desktop So it doesn't do much eye strain instead of always having that program running here on my taskbar It's actually running in the background. So I only see it occasionally Well, if we think about it, okay, that was Windows 7 but what about you know, you Mac users or you? Windows 8 users. Well, here's what's known as the Apple's dock and it looks exactly the same There are subtle differences for example instead of a start menu. We have what's known as My finder. We also have the app launcher and what these do is they just do the exact same thing They give me access to all the programs on my computer Now you might have remembered if we take a look back at Windows 7. I have access to a lot of different files Well, Winamp and Steam those are actually not running right now. Those are just kind of in place Windows 7 actually added this functionality in because it was on the Mac. I know you're saying oh that makes Macs better In reality, it's just a it's another way for us to access files And this is actually a good example because just recently we upgraded from the OS X Maverick to the OS X Yosemite And so one of the major things that happened there was a major Graphic user interface change. We actually call this a UI change UI user interface and You can see that's actually what happened Maverick is very kind of Three-dimensional it gives a lot of texture to it Well, if you kind of look at things like Windows 8 for example Windows 8 has this now very Flat UI, and they're not the only ones a lot of people have actually moved to this flat UI And so you can see we still have the same functionality Things change and the reason why I mention this is that's something we have to kind of be aware of as technology advances it's not gonna stay the same so It's gonna adjust and we have to adjust with it We have to be ready for it because this is what Windows 8 looks like Windows 8 Very flat UI like I said, but very different than This oh my goodness. Well, you're saying now oh 8.1 add that functionality in but Again, once upon a time it wasn't so this is actually what Windows 8 looks like nowadays And some of you you probably like it. You don't like it Actually does not matter and again when we think about the advancement of technology This is what Windows 10 is gonna look like it actually took the ideas of Windows 8 it took that Screen that start screen that some people like some people don't like some people are getting used to and It's actually convincing it back down We're actually reverting a little bit back to Windows 7, but we're still keeping that Windows 8 functionality People did like some parts of it Some people didn't like other parts of it like the fact that it got rid of the desktop You had to actually kind of click on a little button here to get there And it merged them together if you're actually so inclined you actually tempted to kind of try this out You can you can actually go on Microsoft's website and Download a copy for yourself. So if you're actually kind of curious you're you want to play around with it Download a copy install it on one of your computers I do recommend that you do not do not install this on your main computer And the main reason is since this is still in what we call beta. It's still in testing. It's still being developed It's free, but it has a chance of breaking and that's not a you know It's not gonna wipe your computer and you're gonna, you know break it as they call but It's better to kind of be on that safe side You know install this on an old computer you might have then you get to probably play around with it and see if you like it You know might get you excited for Windows 10. So we'll stop there