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00:00a very good morning to you children welcome back to your computer class and
00:06today we will learn our new chapter that is understanding windows in this
00:13chapter we will learn about operating system desktop icons notification bar
00:22etc so let's get started the topic so children can you tell me who takes care
00:32of all the important works at our school yes you are right our principal looks
00:41everything in such a good manner that we do not have to worry principal manage all
00:49the work of our school okay now assume that our principal is away from the
00:56school and we have to manage the school have you seen us any school without
01:02principal no we can't manage the school without principal it is too difficult to
01:09manage the daily chores of a school similarly a computer has a set of
01:17program yes a computer has a set of program that is an operating system
01:25which manages all the work of the computer and makes it run as our principal
01:34manages all the work related to the school similarly a computer is having a set of
01:42programs which manage all the works of the computer and make it run we call it as
01:50an operating system a set of program is known as operating system yes without
01:58operating system our system will not work why because operating system manages all
02:06all the work related to the computer like input and output connecting the devices networks and
02:15everything whatever instruction we are giving to the computer and whatever output we are
02:20getting from the computer everything will be managed by only operating system so operating system is
02:28what operating system is there set of programs which manages all the work related to the computer
02:34the computer and make the computer run understood next operating system is a type of software that makes our computer ready to use yes operating system is a set of programs it is a software set of program is what so set of program is a software
02:58so operating system is a software that makes your computer ready to use ready to use for the users without an operating system the computer cannot work without an operating system our computer will not work because who will manage all the work related to the computer all the input and output devices all the input we are
03:28whatever input we are given to the computer and output we are getting from the computer everything will be managed by only operating system so without an operating system our system will not work operating system directly interacts and control the computer hardware yes operating system is a software that directly interact with the computer hardware hardware hardware means monitor
03:58mouse mouse in keyboard and CPU okay so all these hardware devices are connected with the operating system so that our computer will work so that our devices can work okay without connecting to the operating system as our device will not work okay for example by using mouse we will give instruction to the operating system or
04:28the computer so that it will work it also keeps track of all the tasks given by the user as i said we give input to the computer by using mouse or keyboard so it keeps track of all the tasks given by the user operating system manages all the things like whatever input we are given whatever output we are getting it is all
04:58all these things manages by all these things manages by an operating system the examples of operating systems are windows microsoft windows is an operating system that we use in our computer system yes linux linux is also an operating system
05:05순xlinux linux is also an operating system thanks as a unix unix is unix is also an operating system that we can install in the computer computer that is input in our computer okay no mac os mac os is also an operating system that we are
05:24an operating system that that we can install in our computer that is inbuilt
05:30in our computer okay now Mac OS Mac OS is also an operating system it is an
05:38example of operating system now Ubuntu Ubuntu is also an operating system and
05:45etc okay so children we already know that mouse is used to give the
05:54instruction to the computer yes we know that mouse is used to by using mouse we
06:00can give instruction to the computer we can give input to the computer can you
06:05explain how do you communicate with the mouse attached to your computer yes can
06:11you explain me that mouse is a device mouse is a hardware and how it is
06:17connected to the computer that we can give input to to the computer how do you
06:24instruct it to move the cursor right and left and open the file can you explain
06:31me how do you instruct it to move the cursor right and left or open any file
06:38because it is in hardware device it is only connected through the wire to give
06:43the instruction to your computer you either press the right button or the
06:49left button to give some command okay so what what you are doing you are giving
06:55the commands or you are giving the instruction to the computer either you
06:59are pressing left button or you are pressing right button by this you can give
07:04the instruction to the computer or giving any command to the computer okay now these
07:11commands through which a user communicates are graphical user interface yes gui the full
07:23form of gui is graphical user interface so what is a graphical user interface it is the
07:30interface between the user and the operating system or the system okay it is the
07:38interface between the user and the system by which user can communicate with the
07:46operating system or any computer system okay so the graphical user interface is a form of
07:54user user user interface that allow user to interact with electronic device through graphical icons understood so what
08:08are ma what we are doing with our mouse we are just selecting the pictures we are just
08:15selecting if you want to use if you want to use tux pane so what we will do we will just press the
08:21left mouse button on the left mouse button on the tux pane so that it will open okay so it is an interface that allow the user to interact with the electronic device yes electronic device that means we can connect to the mouse to give the input to the computer through the graphical icons
08:45graphical icons the small pictures on the desktop or any computer screen you can see are the graphical icons the small pictures that you can see in your computer screen are graphical icons understood instead of the text based user interface it uses graphical icons
09:09icons okay so it we can connect through the graphical icons
09:16windows 7 is the most popular operating system by microsoft so the example of graphical user interface is windows 7 okay so windows windows 7 is the user base graphical user interface which is connected directly to the user
09:37connected directly to the user through the graphical icons understood the small pictures that you can see in your screen are graphical icons okay so whenever you click on that icon the files will get open that means you are directly you can interact with the computer or you can directly open the files
10:03ывают you can you are directly open that means you can see
10:09okay so windows 7 yes 0 k
10:14okay it is developed by microsoft microsoft is the leading company of the leading software company okay so windows 7 windows 7 is the version of my windows which is developed by microsoft microsoft
10:27Microsoft is the leading company okay leading software company understood so
10:34Windows 7 is the most popular operating system by Microsoft it is a GUI based
10:41operating system understood Windows 7 was the first version of the computer
10:48which uses GUI in it GUI means graphical user interface so that a user can
10:56directly interact with the computer system or any device by using graphical
11:02user interface by using the graphical icons understood now so you can select
11:10that task with the help of pointing device like mouse okay so what we can
11:18do we can just we have to just move our mouse we can still move the cursor into
11:23the screen and we have to just select the particular icon or particular
11:29application so that we can use the application understood now what are the
11:36features of Windows 7 Windows 7 was the first version of the computer version of
11:43the Windows which uses GUI in it so what are the features of the Windows 7 it is
11:50easy to use and operate yes Windows 7 was easy to use and operate it because it
11:57was user-friendly now high quality of graphics attractive colors and themes yes
12:05it is having high quality of graphics colors and theme so that we can change
12:12the pictures of the wallpapers the newly designed start button here in the screen
12:18the button you can see is the start button which was made on the Windows 7 only now
12:28new and improved search tool here you can see the search tool search box where you
12:35can search for any file or any application understood so it is having new and
12:43improved search tool it allow user to work on many program at the same time that
12:51means it allow user to work on many programs which means the first operating
13:01system was multitasking operating system Windows 7 was multitasking all operating
13:07system so that we can work on many program at the same time for example we can use
13:15computer files we can open the computer files at the same time we can use music we
13:21can listen to the music we can draw pictures at the same time or we can use
13:26another other applications now when how to start the window when the computer is
13:34turn on how you can turn on the computer you know the steps you already know the
13:40steps first you have to switch on the power supply button to turn on the computer
13:45so first step step is to turn on the to switch on the power supply button okay after
13:53switching the power supply button you have to switch on the CPU button first after
14:00switching on the CPU button you have to switch on the monitor you have to switch
14:04on the monitor okay and what you have to do when the computer is turn on it takes a
14:12little while to display the welcome screen of the window yes when you switch on the
14:18CPU button or the monitor and the map monitor button it will take few seconds to
14:25turn on the screen welcome screen of the window so why because it is the booting
14:33process okay so this time consumed by the process is known as booting yes the few
14:42seconds computer takes to turn on the welcome screen this process is known as
14:49booting process understood the booting is the process of loading the window
14:56operating system so what is the booting booting is the process to load the window
15:03operating system okay now after booting the welcome screen appear followed by the
15:11main screen yes after the booting process our Microsoft Windows 7 will start and the
15:22our welcome screen will appear okay now the first screen which appears on the
15:28monitor screen after switching on the computer is known as desktop yes this screen
15:38screen you can see this screen is known as desktop whenever you switch on the
15:45computer the false displayed screen on the monitor is the desktop understood it is
15:52known as desktop now likewise at your home as we arrange our things like pen calendar
16:00books everything we arrange properly in our table calendar organizer etc ok so we arrange
16:11everything in a in in a good manner similarly the desktop contains
16:17frequently used installed program on our computer whatever program whatever of
16:25applications you are installed in the computer it will show it will be visible
16:30in the desktop because desktop contains all the application or the newly installed
16:38programs understood now what there are mainly two components present on the
16:45computer desktop come the components of computer desktop are icons and taskbar yes
16:54icons and taskbar so there are two mainly components present on the computer desktop
17:02first one is icons icons what are icons icons are the small pictures that is present in this desktop
17:13ok the small pictures on the desktop are known as icons now next is a taskbar taskbar is the
17:24bar bar that is present at the bottom of the computer that is present at the bottom of the screen ok now
17:30the pictorial representation of the installed computer program is known as icons yes icons are the small graphical pictures which is visible in the desktop
17:44in the desktop understood understood next some of the common icons on the desktop are
17:52my computer recycle bin and network or etc so what recycle bin do recycle bin
18:02uh contains all the files all the deleted files whatever whatever you have deleted from the computer
18:12okay so recycle bin store all the deleted files next is computer so computer icon it contains all the files
18:27all the files which is saved in your computer where where it is saved it is saved in a computer icon
18:34now what network icon do network icon manages the internet connection or the network of the computer
18:44some of the common icons on the desktop are computer recycle bin and network now taskbar is the long
18:53horizontal bar at the bottom of the desktop what is taskbar this bar the long horizontal bar present at the bottom of
19:03the screen is a taskbar okay so what it contains it contains it contains start button it contains all the quick launch bar
19:12what are quick launch bar the the quick launch bar is this space between the notification bar and start button is a quick launch bar
19:25okay now at the corner we have notification bar okay now at the corner we have notification bar in the taskbar
19:32so this bottom bar is known as taskbar now a start button on the left side yes this start button on the left side
19:44quick launch bar in the middle sections yes the middle section contain quick launch bar
19:51and at the notification bar and at the notification area and show dog desktop button on the right corner
19:59this notification bar contains taskbar contains this notification bar at the right corner okay now when
20:08we click on the start button a menu attached to it will appear yes when you click on the start button
20:17this menu will open so that you can open any program
20:26now double click on the left mouse button on the respective icon will open the selected application in the
20:35another window yes if you want to open the icons file you have to double click from the mouse
20:45okay once you will click the double click from the mouse on any icon the files will open in another window
20:55understood now for example when you will double click on the computer icon so what it will show it will show
21:05all the files whatever is saved in your computer so once you click double click on the computer icon
21:14it will show all the files that are saved in your computer now notification area will include a group of
21:23icons that tells about the status and various things like it tells about the network it tells about the sounds
21:33and etc and here at the corner you can see the clock you can see clock and calendar that means you can see the date
21:43and the time of the current date