Computer Operating System Part-2 | Computer by Sachin Sir | Arora Educator
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- Опубликовано: 12 дек 2020
- Computer Operating System Part-2 | Computer by Sachin Sir | Arora Educator
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An Operating System (OS) is an interface between a computer user and computer hardware. An operating system is a software which performs all the basic tasks like file management, memory management, process management, handling input and output, and controlling peripheral devices such as disk drives and printers.
Some popular Operating Systems include Linux Operating System, Windows Operating System, VMS, OS/400, AIX, z/OS, etc.
Following are some of important functions of an operating System.
Memory Management
Processor Management
Device Management
File Management
Security
Control over system performance
Job accounting
Error detecting aids
Coordination between other software and users
Following are some of the most widely used types of Operating system.
Simple Batch System
Multiprogramming Batch System
Multiprocessor System
Desktop System
Distributed Operating System
Clustered System
Realtime Operating System
Handheld System
Kernel
The kernel is a part of the software. It is like a bridge between the shell and hardware. It is responsible for running programs and providing secure access to the machine’s hardware. The kernel is used for scheduling, i.e., it maintains a time table for all processes. And the types of kernels are listed a follows:
Monolithic kernel
Microkernels
Exokernels
Hybrid kernels
Shell
The shell is a part of the software which is placed between the user and the kernel, and it provides services of the kernel. The shell thus acts as an interpreter to convert the commands from the user to the machine code. Shells present in different types of operating systems are of two types: command-line shells and graphical shells.
The command-line shells provide a command-line interface while graphical line shells provide a graphical user interface. Though both shells perform operations, the graphical user interface shells perform slower than the command line interface shells.
Types of shells
Korn shell
Bourne shell
C shell
POSIX shell
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Thank you 🤗
Sir window 11 latest Oct mai release hoga ..
Yes sir superrb session
Thank you sir🙏🙏
Sir first operating system 1950 nahi aayega 1956 ki jagah?? @AroraEducator
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2023 update:
Latest Mac OS is mac-os 13 ( Ventura)
Android latest version is Tiramisu 13.
Again I am back with new update nov 2023.
Android latest version: 14 ( upside down cake)
Mac os : sonama 14
IOS : 17
What I learned from the previous lecturer.
What is os
Types of os
Booting
Types of booting
OS - os is an interface between a user of a computer and hardware of the computer.
It acts as a manager who manages all the programs.
It loads first.
It is a system software.
Types of Os -
4 types
Single user single task
Multi user multi task
Real time operating system
Single user multi task
Booting -
It is a process inwhich os loads in RAM .
Cpu - rom-post -bios-cmos-ram
Staring/restarting =booting
Types of booting
Cold booting - fresh start
Warm booting - restart /reboot.
Open source- Linux ( Debian, Fedora, ubuntu, ted hat), Android, Open Solaris
OS Interface :
1 CLI/CUI -uses keyboard, high speed operating system.
Eg - Ms Dos, Unix, Windows
2 GUI- uses keyboard and mouse, user friendly
Eg- Microsoft windows, Mac os, Linux variants like ubuntu, Android.
Facts:
1. First OS was created by General Motors- 1956- Run IBM for Mainframe computers.
2.First Microsoft OS - MS DOS, 1981 invented by Tim Paterson
3.Latest Microsoft OS- Windows 11
4.Latest MAC OS- Mac OS 13
5.Latesr iOs - iOS 16
6.Android Os developed by Google
7.Latest version of Android- 13 Tiramisu
Android Os-
Founder- Andy Rubin
Logo- Green robot
Designer - Irina Block
Android team called it Bugdroid.
1st version- Cupcake( 1.5)
Code in Java, C, C++
Genuine teacher of computer..thanks for all classes🙏
Thanks a million dear👍
helping even 3 years later i think i will use arora sir videos to teach my future son😁☺
Why son it may be girl🙂
God Of Computer Sachin Arora sir One of the best teachers of Computer competitive exam
Thank you a lot sir , you are the best teacher in computer
Really I watched every channel which teacher about computer
Bt when I watched your channel I really thnx to you
Which teaches every topic like A B C D
Love from kashmir india 🇮🇳 ❤ ❤
Never seen teacher like that
JABARDAST CLASS SIR
Love you Sir From KASHMIR India .
Watching now .. 2 months left to exam
Sir u r mind blowing teacher on you tube 🙏 mere concept clear kr diye aapne
Love from the paradise on earth ❤️
Sir ji bahut group dekhe but ye group all the best mja aa jata hai .best teaching no 1 arora educator
✌️👍
Thanku sir....very fruitful session....
Always welcome Sonali👍
Android 12 or Snow Cone was released in 2021.
Android 13 or Tiramisu was released recently.
update 2023
Latest Microsoft OS - Windows 11 released in oct 2021
Latest Mac OS - MAC OS 13 ventura released in feb 2023
Latest IOS version- 16 released in sep 2022
Latest android version - 13 Tiramisu released in aug 2022
thanks bro
Thank you 🙇
Yes sir .please consider it
october me mains tabtak ios 17 september me launch😛😛
Bhut axa smjhate hai sir app thank you so much sir ❤❤
Bahut bahut thanks sir aap bahut achha padaye h and again thanks
Best teacher for computer I ever found
Sachin Arora sir is genius in theory of computer
Lecture done ✅
I hope this channel will get 1 million subscribers very soon
Thanku so much sir 🙏🙏🙏
Thanks for your valuable lectures 🙏
It's my pleasure @Prakash Verma👍
now, Latest Microsoft OS - Windows 11 --> 2021
macOS -- 14 --Sonoma --2023
iOS--17--2023
Android 14 Upside Down Cake--2023
Android 15 vanilla ice cream hai kya sayad latest version
Best computer teacher thanks
Best best explanation by you of any topic...best teacher
You r the best teacher super content provide
Warmest thanks👍
Thank you so much sir for this wonderful session and your effort for us ❤❤🎉🎉😊😊
Thank you sir
Bahut informative video sr
Thank you so much sir for this wonderful session 😊
Thank u so much Sir for such a GREAT SESSION 🙏👍👍👍
This is sufficient concept ..for rrb
Theory to chapp ja rahe hai dimaag me . Great session 🙂🙂
👍👍
My favourite teacher in this world sir god bless uuuu
Your great teacher of computer 🙏🙏🙏🙏🙏🙏🙏❤️❤️❤️❤️❤️
Fantastic classes 😊 Thank you sir 🙏
I learn a lot..you are too good sir🙏
Thanks @Richa Bhatia👍
❤❤ thanks for this session 😊 sir
Thanks u sir bhut acha padhaye
Computer best teacher❤❤❤❤
Sir your teaching manner is very good I found you today and watch 1 or 2 videos and I felt quality so I quickly subscribed u....you teaches very well and clear all concepts, thanks a lot for these wonderful & free content
Your way of teaching is wonderful ❤❤❤❤❤
Awesome class 😍
Difference between multiprogramming , multiprocessing, multitasking.
Batching processing, parallelprocessing .
And make a video on motherboard, the devices that are connected there like cmos, bios, pheriphrals, etc please
Sir aap bahut accha padhate ho
Done Sir,Thank You Very Much Sir
My favourite teacher
My favourite teacher .......
Clear samjh me aa gya ❤
now latest microsoft operating system Windows 11 released on October 5, 2021.
Very helpful lecture thank you sir
Really a master sir of computer👍👍👍👍🙏🙏🙏🙏🙏🙏🙏🙏🙏
✌️👍
Thank u sir stay blessed
Favourite teacher
Awesome 🥰🥰🥰
Sir ! Could you please make a video on " role of IT In governance "
Thank you sir ❤
More to learn more to practice thkuu so much sir 🙏🏿🙏🏿
Great 👍 sir
Thank you sir for the class
Latest Android os- Android 12- snow cone
Mac OS - 11.6 big sur & catalina
Latest IOS - Apple 15.5
Thanku so much sir 🌸
Thankyou Sir for an incredibly amazing session🙏🙏
Thanku so much sir
sirji great. ho
Mind-blowing
Nice session sir👌👌
Thanks Prajakta 👍
Unix's command prompt,
Windows' command prompt
Is command line interface/
Character user interface
While UNix is multiuser multitasking
Thank you so much sir😇🙏
Nice explanation sir🙏
Thanks Roshni👍
Thank you sir.
Thankyou soo much sir
Very informative session 👍
Tq so much sir......your way of teaching is soo amazing.....sir pls tell me your live class tym....plsssss
Very nice trick..android version names..thank you sir🙏
Your Welcome @Sohini,👍
Thank you sir...
You are always great sir g
Too good sir❤️
Thanks @Neha Shukla👍
Thanks you so much sir ❤️❤️❤️❤️❤️
Best teacher ever😍🙏🏻
Excellent approach sir..... I find this channel right now and very very helpful..... Subscribed
Today my efforts to find good IT ecudar comes to an end
Thank you 🙏
Thanku sir🙏
Your Welcome @Richa Bhatia
COMPUTER GURU ..🙏😍
best..... 👍
thank you sirrr ❤❤❤❤❤
Good explain
Thanku shi much sir ji
Latest MAC OS: Mac OS 14 ventura
Latest iOS: iOS 16
Latest version of android: Android 13 Tiramisu
Tnq
Latest MAC OS : mac OS 13 Ventura hoga na.
Nice explanation
thanks❤ sir
latest mac operating system macOS Ventura
Thank u sir❤️
Done Sir....thank you