0:38 You must know structure of computer system to understand how OS works 1:41 A computer has one or more CPU s and a number of device controllers connected through a Bus that provides access to shared memory . 2:27 CPU - Central Processing Unit 4:09 Hardware devices are connected to device controllers / adapters 5:20 Shared memory (the memory that may be simultaneously accessed by multiple programs) 7:56 To ensure orderly access to the ‘ shared memory ’ requires a memory controller. The function of the memory controller is to synchronise access to the main memory. 9:38 Bootstrap program 11:26 Kernel 12:00 Interrupt 13:52 System call
I have to express my opinion. This is the best class I have ever taken. The lectures are clear and concise, and the speed is very suitable. I like this way of explaining word for word and giving examples very much.
Where have you been all my life? How did you make a concept I really did not understand all semester just click as clearly and simply as you did? I am so grateful for you sir! You are definitely an educator!🤓 It's like I had all the pieces of the puzzle but they just werent coming together no matter how much I became familiar and examined the pieces individually or holistically, then you came and provided perspective and knew what knowledge I was missing to connect the dots! I appreciate you. Thank you.
Sir,I don't think I believed in the phrase "Teacher is a God" Because I never felt like learning and exploring from my college lectures But now I believe the phrase, after listening to your lectures May god bless you 🙏
If you are watching this in lockdown believe me you are one of the rare species on the earth who are working hard to achieve something in life .many people are wasting their time watching movies and webseries , etc.
Clear Elaboration by the speaker. This tutorial contains a clear explanation of structure of computer ( device, device controllers, bus , memory and CPU). Moreover it explains the term interrupts distinguishing them from system call. In addition to the explanation of interrupts, it also explains how CPU attends to interrupts by execution interrupts services routines.
🎯 Key Takeaways for quick navigation: 00:00 *🖥️ Introduction to computer system operations* - Introduces the importance of understanding computer system operations for comprehending how the operating system functions. - Explains the structure of a modern general-purpose computer system, including CPUs, device controllers, and shared memory. - Describes the role of device controllers in managing specific types of hardware devices and their connection through a common bus to shared memory. 05:14 *🧠 Understanding device controllers and shared memory* - Expands on the functions of device controllers and their responsibility for hardware device management. - Explains the importance of orderly access to shared memory and the role of the memory controller in synchronizing memory access for smooth device operation. - Illustrates how various hardware components interact through a common bus to access shared memory. 09:00 *🚀 Introduction to Bootstrap Program and Interrupt* - Defines the Bootstrap Program as the initial program executed when a computer is powered up or rebooted. - Discusses the function of the Bootstrap Program in loading the operating system kernel into memory and starting system execution. - Introduces the concept of interrupts, triggered by hardware or software events, and their role in halting CPU execution for priority tasks. 14:06 *🛡️ Understanding interrupts and system calls* - Defines interrupts as signals from hardware or software that pause CPU execution for prioritized tasks. - Introduces system calls, triggered by software operations, as a form of interrupt. - Explains the CPU's response to interrupts by transferring execution to a fixed location containing the Interrupt Service Routine (ISR). Made with HARPA AI
Amazing. The breadth of your knowledge and thoughtful consideration you took in designing the course exceeded any expectations or other resource I could find
I don’t like commenting on TH-cam videos But he has just caught my attention and triggered me to comment. Again when I’m subscribing to a channel I don’t feel okay but he has gained a subscriber ❤️ thank you sir
Thank you so much for such a clear and precise explanation . I've read the topic '"computer operation" in the book "operating system concepts" by silberschatz since it was the text book given for reference and recognized and saw the same notes and points been included in the video which I didn't understand when I read it but did when you explained it in the video so glad that I found a resource similar to the original book that helped my learning . 👍
A modern general-purpose computer system consists of one or more CPUs and a number of device controllers connected through a common bus that provides access to shared memory. To ensure orderly access to the shared memory, a memory controller is provided whose function is to synchronize access to the memory 1) Bootstrap Program:- - The initial program that runs when a computer is powered up or rebooted. - It is stored in the ROM. - It must know how to load the OS and start executing that system. - It must locate and load into memory the OS Kernel. 2) Interrupt: - The occurence of an event is usually signalled by an Interrupt from Hardware or Software. - Hardware may trigger an interrupt at any time by sending a signal to the CPU, usually by the way of the system bus. 3) System Call (Monitor call): - Software may trigger an interrupt by executing a special operation called System Call.
14:50 CPU doesn't stop the current instruction cycle immediately and transfers the control to ISR. There are various steps involved in this process. It doesn't happen immediately as you are saying.
In computer architecture, a USB controller, also called a Universal Serial Bus controller, is a chip that acts as an intermediary between the computer's central processing unit (CPU) and the USB devices you connect to it. eg: Keyboards and Mice: Essential for everyday computer use. Webcams: Used for video conferencing and online calls. Gamepads and Joysticks:
00:01 Understanding the structure of computer system operations is essential for comprehending how operating systems work. 02:29 CPU is the main part of the computer system, responsible for all computations and processing. 04:50 Devices work with CPU via a common bus and shared memory. 07:04 Concurrent execution of device controllers and CPU ensures seamless operation. 09:21 Bootstrap program is the initial program that runs when a computer is powered up or rebooted. 11:39 The bootup process loads the operating system into memory to start the computer. 13:49 Interrupts and system calls explained 16:00 CPU responds to interrupts by stopping current execution, transferring to interrupt service routine, executing it, and then resuming interrupted computation.
0:38 You must know structure of computer system to understand how OS works
1:41 A computer has one or more CPU s and a number of device controllers connected through a Bus that provides access to shared memory .
2:27 CPU - Central Processing Unit
4:09 Hardware devices are connected to device controllers / adapters
5:20 Shared memory (the memory that may be simultaneously accessed by multiple programs)
7:56 To ensure orderly access to the ‘ shared memory ’ requires a memory controller. The function of the memory controller is to synchronise access to the main memory.
9:38 Bootstrap program
11:26 Kernel
12:00 Interrupt
13:52 System call
you're very nice
People like Hudie make the world a better place
@@florianvanbondoc3539 😆
Thank you very muchhh
Tqsalot 😊
I have to express my opinion. This is the best class I have ever taken. The lectures are clear and concise, and the speed is very suitable. I like this way of explaining word for word and giving examples very much.
I seriously don't know why we all take university teachers boring, not understanding lectures for an hour this 18 min video cleared my concept better
Really bhai r u satisfied with this then if it happens then we all should leave the class and join this
that's how world works :(
me too, bro. I misunderstanding anything when I come in class. I was just feeling to sleep :))))))
if u have done what u had to..,they dont let u do what u want to.....Thats life...!!
@@killua9903 can u explain pls?
Very clear presentation.I strongly recommend this to someone who's just learning about OS(such as myself).
Thank you
This playlist taught me OS better than my professor
Oh my god ist it then i will join it from today
i ll be your professor
@@tikitoka9026 😂😂
@@sumitsalunkeco6i118 😁😁
Same for many people
Where have you been all my life? How did you make a concept I really did not understand all semester just click as clearly and simply as you did? I am so grateful for you sir! You are definitely an educator!🤓 It's like I had all the pieces of the puzzle but they just werent coming together no matter how much I became familiar and examined the pieces individually or holistically, then you came and provided perspective and knew what knowledge I was missing to connect the dots! I appreciate you. Thank you.
Sir,I don't think I believed in the phrase "Teacher is a God"
Because I never felt like learning and exploring from my college lectures
But now I believe the phrase, after listening to your lectures
May god bless you 🙏
100% Trueee
Not bad not bad 😏
If you are watching this in lockdown believe me you are one of the rare species on the earth who are working hard to achieve something in life .many people are wasting their time watching movies and webseries , etc.
yessir thats facts. i wanna become a computer systems analyst when i become an adult
Thanks, needed to hear that
Wtf I see your comment in every video
@@krishnaprasadnayani1871 yeh
LMao can't cheat my way through every exam now, can I?
May be the best series which I've ever seen in term of operating system
Our college Professors 2 hours is equal to your 20 minutes, Thank you for saving our time and clearing the concepts
Thank you for helping me and so many other students! These videos are clear and to the point with USEFUL explanations that help aid our understanding.
Best TH-cam channel for any subject like ADE, COA, OS, etc.. Which is very clear and easily understandable.
Very clear and easy concept of OS..
This playlist is a gem, youtube is the present and future of education
Clear Elaboration by the speaker.
This tutorial contains a clear explanation of structure of computer ( device, device controllers, bus , memory and CPU). Moreover it explains the term interrupts distinguishing them from system call. In addition to the explanation of interrupts, it also explains how CPU attends to interrupts by execution interrupts services routines.
I was not able to get even a single thing related to the operating systems. but now I am blessed Alhamdullillah..........
Okay i dont know how uni life would have been without this chanel, its it was made for me specifically; thanks Neso, #NESO_LIFE!
🎯 Key Takeaways for quick navigation:
00:00 *🖥️ Introduction to computer system operations*
- Introduces the importance of understanding computer system operations for comprehending how the operating system functions.
- Explains the structure of a modern general-purpose computer system, including CPUs, device controllers, and shared memory.
- Describes the role of device controllers in managing specific types of hardware devices and their connection through a common bus to shared memory.
05:14 *🧠 Understanding device controllers and shared memory*
- Expands on the functions of device controllers and their responsibility for hardware device management.
- Explains the importance of orderly access to shared memory and the role of the memory controller in synchronizing memory access for smooth device operation.
- Illustrates how various hardware components interact through a common bus to access shared memory.
09:00 *🚀 Introduction to Bootstrap Program and Interrupt*
- Defines the Bootstrap Program as the initial program executed when a computer is powered up or rebooted.
- Discusses the function of the Bootstrap Program in loading the operating system kernel into memory and starting system execution.
- Introduces the concept of interrupts, triggered by hardware or software events, and their role in halting CPU execution for priority tasks.
14:06 *🛡️ Understanding interrupts and system calls*
- Defines interrupts as signals from hardware or software that pause CPU execution for prioritized tasks.
- Introduces system calls, triggered by software operations, as a form of interrupt.
- Explains the CPU's response to interrupts by transferring execution to a fixed location containing the Interrupt Service Routine (ISR).
Made with HARPA AI
Wow 😳😲 amazing learning your playlist video ..🙏🥰 thanks sir
your instructions made me clear. You should do like this you are very helpful and instructions clearer. Thanks for clearing our questions
Sir, you have my gratitude. I'll forever be grateful for sharing of knowledge. You're awesome and so is channel.
We need these types of teachers more.
I am looking for this type of teacher.
Thank you so much teacher.
you guys deserve at least a million subscribers.
My fav channel ❤️
Best channel for me to study for my semester exam your content is fabulous
this playlist was much more efficient than my whole classes in the university!
Thanks!
I have learnt these lessons , is very clear understand for beginner . It provided the office man and programmer. Thank you.
excellent videos even below average student will understand and he will explain to others also thanks ur support to students
Got everything I needed to know about OS just 1 hour before the exam
Wow,you’re amazing,thank you for the best help🙏🏻🙏🏻🙏🏻🌷
Amazing explanation OMG so happy I found this course
Very nice and easy to understand, keep it up! sir, God bless.
i really glad that I found you
your tutorial is very easy to understand
thank you very much
Amazing. The breadth of your knowledge and thoughtful consideration you took in designing the course exceeded any expectations or other resource I could find
Thanks neso academy for giving such a quality education
I don’t like commenting on TH-cam videos
But he has just caught my attention and triggered me to comment.
Again when I’m subscribing to a channel I don’t feel okay but he has gained a subscriber ❤️ thank you sir
Thanks alot.had not understood about this concept but when I watched this video my mind opened and understood everything...be blessed...
Awesome lecture to use along side my professors lectures. TIP: playback in 1.25
hero
As a fresher the explanations make every thing clear.great job....
Your video clear my all doubt about operating system and you explain every points in very details thank u sir for making this video .......
Great videos this is the equivalent of a $1000 class on os theory from my college.
Thank you so much sir I am studying os and networking from this channel , this is the only channel which provide me quality conte🙄❤️❤️❤️❤️🙏🙏🙏
i swear your a life saving honestly was gonna give up on computer system but u gave me hope
Best explanation out there, thank you very much!
Thank you so much for such a clear and precise explanation . I've read the topic '"computer operation" in the book
"operating system concepts" by silberschatz since it was the text book given for reference and recognized and saw the same notes and points been included in the video which I didn't understand when I read it but did when you explained it in the video so glad that I found a resource similar to the original book that helped my learning . 👍
Such precise explanation👏. Thank you, neso academy.
Sir it's really helpful for me. Thankyou very much for these lactures ....
Sir you are indeed a teacher.
Very strong tutorials. Highly recommended. It would also be cool to get a set of questions at the end of each lecture! :)
you are awesome....very good explanation ,directly feed to brain without any interuption.
Excellent and outstanding explanation. Best teacher ❤
Thanks for your valuable words❤
Who tf is you? Not the teacher definitely @@zero4one-A13
Thank you very much for your dedicated work !!
I think what he says it's very easy to understand than my own teacher!!!
A modern general-purpose computer system consists of one or more CPUs and a number of device controllers connected through a common bus that provides access to shared memory.
To ensure orderly access to the shared memory, a memory controller is provided whose function is to synchronize access to the memory
1) Bootstrap Program:-
- The initial program that runs when a computer is powered up or rebooted. - It is stored in the ROM.
- It must know how to load the OS and start executing that system.
- It must locate and load into memory the OS Kernel.
2) Interrupt:
- The occurence of an event is usually signalled by an Interrupt from Hardware or Software.
- Hardware may trigger an interrupt at any time by sending a signal to the
CPU, usually by the way of the system bus.
3) System Call (Monitor call):
- Software may trigger an interrupt by executing a special
operation called System Call.
Os is must for any one who wants to make career in IT.
Best , Best , Best upto infinity...............
👌 Thanks a lot 😃😃💯💯
Thank you so much!! I keep re-reading my book and still couldn't understand it! Thanks for making it clear.
14:50 CPU doesn't stop the current instruction cycle immediately and transfers the control to ISR. There are various steps involved in this process. It doesn't happen immediately as you are saying.
A very nice and clean explanation, thank u soo much
Bunch of thanks of amazing explanations❤❤
Best presentation sir. Salute you 👍
But one thing I suggest is that if u also provide ppts with every list it would be more perfect sir. 👍
Play at 1.5 speed with closed caption. Perfection.
The class goes great!
very intersting to learn your way of teaching
thanks to Neso academy
Sir questions practice series video
In computer architecture, a USB controller, also called a Universal Serial Bus controller, is a chip that acts as an intermediary between the computer's central processing unit (CPU) and the USB devices you connect to it.
eg: Keyboards and Mice: Essential for everyday computer use.
Webcams: Used for video conferencing and online calls.
Gamepads and Joysticks:
wow super explanation. Thank you very much. God bless you ❤❤❤❤
wow I didn't understand inturrupt signals before but now it is very clear
i love your lecture more than anything keep it up
you deserve my OS professor's salary.
This lecturer is a hero! Well done sir. Clear and to the point.
the best professor I had ever seen❤️❤️❤️❤️❤️❤️❤️❤️
Hmm, Now I got basics. Let's dive deep with beloved Neso
00:01 Understanding the structure of computer system operations is essential for comprehending how operating systems work.
02:29 CPU is the main part of the computer system, responsible for all computations and processing.
04:50 Devices work with CPU via a common bus and shared memory.
07:04 Concurrent execution of device controllers and CPU ensures seamless operation.
09:21 Bootstrap program is the initial program that runs when a computer is powered up or rebooted.
11:39 The bootup process loads the operating system into memory to start the computer.
13:49 Interrupts and system calls explained
16:00 CPU responds to interrupts by stopping current execution, transferring to interrupt service routine, executing it, and then resuming interrupted computation.
Amazing video! BRAVO!
Excellent work
you have awesome ability to explain things... i subscribed
It's really good sir .... thank you so much 🥰
Thank you so much from sri lanka.❤️
Sir..please upload the more video .....complete course on os.
Thank u for this video. I learned lot here than my engineering
Neso Academy You Rock It!
Amazing Explanation👍
hats off for every one of you :)
Thank you very much. Very clearly explained
Thank you so much! I really appreciate what you are doing!
Thanku sir .. for providing me such a powerful video.. it really helps a lot
This playlist taught me OS better than my professor
........
Excellent working good luck 🍀 👍⭐️🥰✅🌎
Am loving your videos in all units big up sir
Jaison Sir it's a humble request for you please provide this entire operating system PPT. Also the way you teach is best.❤
The PPTs are available on our website, please follow the link www.nesoacademy.org/cs/03-operating-system/ppts
@@nesoacademy ok & thank you sir, lots of love to you and your team.
So clear and understandable. Thank you so much!
Great explanation :)
excellent explanation sir
These are great videos, thank you very much!
Very clearly explained and easily understood... Thank you sir
Thanks for that amazing explanation
Thank you Sir for this simple playlist, its helpful for me to revise 🙏