Operating Systems: Crash Course Computer Science #18

Подписаться 16 млн

Просмотров 1,5 млн

50% 1

Get 10% off a custom domain and email address by going to www.hover.com/CrashCourse.
So as you may have noticed from last episode, computers keep getting faster and faster, and by the start of the 1950s they had gotten so fast that it often took longer to manually load programs via punch cards than to actually run them! The solution was the operating system (or OS), which is just a program with special privileges that allows it to run and manage other programs. So today, we’re going to trace the development of operating systems from the Multics and Atlas Supervisor to Unix and MS-DOS, and take at look at how these systems heavily influenced popular OSes like Linux, Windows, MacOS, and Android that we use today.
Produced in collaboration with PBS Digital Studios: / pbsdigitalstudios
Want to know more about Carrie Anne?
about.me/carrieannephilbin
The Latest from PBS Digital Studios: • All PBS Digital Studio...
Want to find Crash Course elsewhere on the internet?
Facebook - / youtubecrash. .
Twitter - / thecrashcourse
Tumblr - / thecrashcourse
Support Crash Course on Patreon: / crashcourse
CC Kids: / crashcoursekids

Опубликовано:

4 июл 2024

Ссылка:

Скачать:

Готовим ссылку...

Добавить в:

Мой плейлист

Посмотреть позже

Комментарии : 630

@realFoxBox 7 лет назад

11:18 where IT began "Have you tried turning it off and on again?"

@psun256 4 года назад

retrogamefox IT: 50% google the answer and other half is turn it on and off

@billmeistera1992 5 лет назад

Thank you to the presenter. She did an amazing job of breaking down a technical topic into a fun and interesting one in a very effective short time.

@Flowtail 4 года назад

Yep, as she does every episode ^ω^

@EdwardCree 6 лет назад

As a Linux kernel developer, I watched the whole video planning to point out all the mistakes and errors. Frustratingly, there weren't any. Well done +CrashCourse, you've ruined my fun ;)

@sauronvile4169 5 лет назад

Except that the operating system ISN'T the first thing to start when you turn on a computer.

@lethalurethral3056 5 лет назад

@@sauronvile4169 She said typically didn't she

@rayshardthompson1456 7 лет назад

Am I the only one who burst into laughter when she said "plug and pray" 😂😂

@mf_01 7 лет назад

my teacher said plug and chug

@madLphnt 7 лет назад

yeah ive heard plug n chug regarding physics equations before never plug n pray but they both sound good. plug and chug is better though

@AthAthanasius 7 лет назад

In the early days of "Plug and Play" on PCs it didn't work all that well, so we did indeed call it "Plug and Pray".

@f.j.n.9215 7 лет назад

A bit like that Australian cardinal did...

@djbutterchicken 7 лет назад

Rayshard Thompson yes you were

@Kori114 7 лет назад

Who else had a brief moment of panic at 11:38 ? I will never forget the sound of old windows giving me a freaking error!

@noxabellus 7 лет назад

bsod ptsd

@madLphnt 7 лет назад

love that sound....Ski Free was awesome too

@kyc269 7 лет назад

Kori114 That sound made my blood pressure spike.

@ashboon1625 7 лет назад

I rarely see a bsod in windows 10 nowadays...

@firebucket8203 7 лет назад

ash boon dun dun dun du dun dun

@janek8195 7 лет назад

I love this show! I've learned so much from it, especially the episodes explaining all the details of how transistors come together to make logic gates, and how those actually come together to make all the different basic parts of a cpu. I've known about logic gates and the way they work (their "rules") for a long time, but never found a video series explaining how they're applied in practice that was so easy to absorb and so well organized. Keep making more episodes plz :)

@thesk8erdav 7 лет назад

computers are rocks we tricked to think

@SbotTV 7 лет назад

I always like to say that computer science is essentially the art of tricking the universe into doing your homework.

@oldcowbb 6 лет назад

we are meat that trick ourselves that we can think

@edibleturd 6 лет назад

But we had to flatten them first so we could put lightning in them

@RibbittIII 6 лет назад

Dav 1243 if a computer thinks than a submarine swims

@limitless1692 5 лет назад

Hahahaha 😎

@chrisseddon260 7 лет назад

Quote of the episode: "This was clearly terrible"

@keistzenon9593 5 лет назад

Nice soundbyte :D the way she says it is kinda funny imagining it it of context

@shadowlove3626 Год назад

Currently starting the transition from clinical psychology to tech and I could not be more pleased with this channel and series! It was wonderful during grad school for psychology and now for technology as I look for programs, I already completed some work though Coursera but this really helps lay a foundation and fill in gaps of specific skills I am currently learning.

@HugoCornellier Год назад

Excellent presenter. I’ve specifically come back to her videos because she’s helped me during Uni!

@kerig6416 4 года назад

These videos have taught me more than my college professors for the past 2 semesters. THANK YOU, and excellent work on these videos!

@satyanweshi-bb 5 лет назад

CrashCourse, you have helped me with satisfying my curiosity for a large number of fields. Thanks for all this.

@dippy9119 7 лет назад

I am thoroughly enjoying the computer science crash course series. Great work Kerryanne and Crash Course.

@jhgfd82 7 лет назад

Aww! You guys put in clips from Bits & Bytes! I loved that series! So happy to see it surface here in some way. Thank you!

@geoffbarker7776 6 лет назад

As someone who has worked with mainframe tech produced in the 1960's and well used to a format loop on a printer you soon get to learn that everything is an evolution from something before it and thus long term you just see it as X with Y. The thing is that most people today would run a mile having to do what we used to have to do, bringing in paper to the print room by 3-4 boxes which was 190+ pounds in weight. Oh the stories of the good old days where throwing a write protect ring could down an entire place if it hit the emergency power off.

@sjupi7941 4 года назад

I studied computer science and was supposed to learn all of these at school but hated it back then. Because they didn't tell it like Carrie Anne.

@cholten99 7 лет назад

I vividly remember in 1994 when my flatmate bought a Commodore Amiga that could play music and print at the same time. We'd had UNIX (Solaris on Sparcs) at uni but seeing a home OS do that felt like a huge step forward.

@mndplg 7 лет назад

Thank you Unix for being the granddaddy of Linux. We salute your efficiency, speed, and power.

@lantishaledane 7 лет назад

"Things weren't exactly PLUG-and-PLAY back then...more of PLUG-and-PRAY." :D :D :D

@revolutionaryprepper4076 Год назад

This is a very good explanation of how operating systems came about.

@aurathedraak7909 6 лет назад

As a programmer and learned computer science. I loved it every bit of it since I was a 14.

@austinmurphy9074 4 года назад

3:40 "dont lie. you dont pronounce it shhhheduling.. 4:16 "got you"

@austinmurphy9074 4 года назад

update: I now pronounce it shhheduling

@chrismissed 4 года назад

Nice catch

@sixfr0nt 5 лет назад

Had to watch this for my high school computer science class. I’m not disappointed.

@fredschwartz3654 7 лет назад

I'm surprised I didn't hear IBM's MFT, MVT, MVS, and VM mentioned. I've been retired for a while, but for the first half of my programming career, they were the only operating systems robust enough to run any large meaningful corporate applications.

@overestimatedforesight Год назад

It's amazing how much things make sense as solutions once someone has explained the problem.

@thdoom81 6 лет назад

you are a blessing..the sequential nature of your videos really helps

@morezco 7 лет назад

Might just be the most interesting Crash Course for me

@countrykang8 2 года назад

This is one of the best lectures I have seen on RU-vid. Keep the info coming!!

@markh5101 7 лет назад

Omg! I haven't watched this yet but I'm already super excited for the Reboot reference on the title card!

@Rtotalmagic 7 лет назад

Mark H Megabyte and Hexadecimal are cool villains, so it's fun to see them make an appearance...

@SunOfNight 7 лет назад

Even after all these years since seeing it last, the blue screen sound at @11:39 is still familiar and dreaded.

@abdallahlakkis449 Год назад

The presenter is absolutely awesome at simplifying these concepts

@kfqfguoqf 4 года назад

Excellent video, very interesting to see each OS feature coming up as a natural solution to a problem people had!

@congaspy2058 7 лет назад

"-blue screen of death-DUN" *heart attack*

@adamstrejcovsky8257 9 месяцев назад

this channel is simply amazing. i was looking long time for some quick explanation of what filesystem is without goign too much into detail, but all i found is comparisons which are better but not what FS actually is. and then there is this cool channel

@verdatum 7 лет назад

"It's a UNIX system....I KNOW this!!"

@SPRPhilly 7 лет назад

"It tells you everything."

@jordantom1789 7 лет назад

"cleaver girl..."

@JM-us3fr 6 лет назад

Stupid movies I've memorized every line to. Now I have to like your comment

@edibleturd 6 лет назад

It WAS Unix, the program used was filesystem navigator.

@aurorajarvis5502 6 лет назад

Incidentally, the computer she was using was the same kind of system they used to make all of the cgi for the movie. A Silicon Graphics system.

@KevShaw808 4 года назад

This is a great video for anyone trying to learn more about operating systems.

@springmemory6637 10 месяцев назад

Great video! I was wondering about all these different types of operating systems that exist and used to, this video was a delight to watch :)

@Danielevans2 7 лет назад

"not quite plug and play but plug and pray" LOVE THAT. That's still true today WITH LIVE A/V +PA STUFF

@fredericktiku2585 Год назад

Currently starting a course on operating system.This video was really helpful.

@gustavskavacs9991 Год назад

This was actually very informative! Thank you! Great, I finally understand what a kernel is.

@magnusnordlund3787 Год назад

Best summary of operating system fundamentals I ever heard! Thanks!

@paxdriver 7 лет назад

Yay! Abstraction elevator returns! Lol love the show, favorite on crash course so far

@varungopal6272 6 лет назад

I wonder no other person can explain better than her such a huge information in crisp and simple way though it does not give a deep insight it is very intuitive

@ajholanda 4 года назад

Congrats! Very crystal clear and concise!

@thinkj2 6 лет назад

Wow! great video! amazingly well structured and given in a clear and easy to understand explanation. Thank you! It was super helpful~!

@nohashtagshere4116 7 лет назад

I'm liking this just because there's megabyte and hexadecimal on this icon screen. That's enough reason for me

@mehmetosman1366 7 лет назад

Noha

@izznub 7 лет назад

Hey. I really like this series and just wanted to point out that the screen shown at 11m20s is not DOS but OS/400.

@TooUnoriginal 4 года назад

Thank you! Wanted to know what that was

@muizzsiddique 4 года назад

These days, if you have 2-8GB of memory and are running the latest version of Windows, you can also find that half of your memory has gone to your OS.

@juanpablodenis3748 7 лет назад

saw many video trying to grasp the concept of kernel, now I can say done.

@JasmineOlivarez Год назад

As a cybersecurity student, I love her shirts lol. My professor linked me to this video for an assignment and it was really good, I learned a lot in such a short amount of time. Thank you!

5 лет назад

I am digging this video series, really.

@crazyconan28 7 лет назад

Your videos are awesome! Thank you crashcourse!!!

@harikirankante3391 Год назад

This playlist is the reason why I took Computer science in my bachelor's degree ❤️

@macbuff81 6 лет назад

Windows 10 still crashes constantly and when you least expect it. One of the reasons I now use Linux and MacOS (a Unix derivative itself). Windows 7 I did find visually appealing and was more stable than previous iterations, but nevertheless using Windows is as annoying as ever. Whenever you install a program, you always run the risk it will alter the OS so the next time you boot up, you get some error message. Oh, and it's especially vulnerable to viruses. Only recently did Microsoft provide basic antivirus as standard along with the OS. Embarrassing. Windows Vista and Windows 8 were prime example of half-baked underdeveloped versions of Windows that should have never been released.

@UnrealOG137 4 года назад

"Half of a computer's memory just to run the OS" So, Windows Vista?

@Sarah-re7cg Год назад

wow, this is a lot and I mean A LOT of information in one video and answers so many questions I've had for so long lol thank you

@TheLukeSchnabel 7 лет назад

This is awesome! Im hooked!

@malikrahman8649 5 лет назад

I love this series!!

@Naz-pk4ll 4 года назад

gosh, I wish there was such clarity for some of the mathematics areas. For example, stochastic processes.

@ryanpeavler5993 6 лет назад

This is an excellent series with a distinguished instructor. In association with PBS? I think this would be an excellent program for PBS kids. Kids today do not know a world without technology. Both of our futures could be improved if children had access to the knowledge of computers and technology.

@JDr-di2qw 11 месяцев назад

thank you for present so nice course,love u guys,love u carrie anne ！

@khendron 6 лет назад

I spotted Billy Van from Bits and Bytes!! The first show about computers I ever watched!

@carlos26ch 4 года назад

This series is so good

@seatek 7 лет назад

that was wonderfully put together!

@BrandonDoran00 7 лет назад

Im loving the animated Reboot characters!

@the_mtb_engineer Год назад

Taught me exactly what Kernel means. Thank you!

@blakeingram1711 5 лет назад

This is helping a lot with my app computer science principles class

@typograf62 6 лет назад

The printer at 5:43 displays a carriage tape. It did control form feed, top of form and feed to a predefined position (channel). Oh, those days. I wrote a printer driver in assembler to a really no-brain printer. It had no buffer, so I had to time each character calculating the time needed to change position and feed paper. As a bonus I added a tabulator function. The printer was a desktop model. It weighed 50 kg or more. My bicycle broke down when I moved this thing home on it.

@JasonWhittle1 5 лет назад

I'm so glad you guys have a computer sub channel.

@MakeMeThinkAgain 7 лет назад

2:20 Reminds me of when we used Macs to control videodisc players around 1990 and you had to study the manual for each device to know what you could do and how. I need to go lie down now.

@echaltraw 7 лет назад

Ok, I honestly clicked to watch the vid because of the Reboot chatacters on the screen card. Childhood nostalgia away!

@recklessroges 7 лет назад

I'm surprised at how many people got the reference. I expected a much younger audience.

@katethemikufan9109 Год назад

Hi. I'm studying games Development and this video is really helpful. Thank you...

@AlexanderBarrow 7 лет назад

"Meaning you can stream a video in your webbrowser and edit a photo in PhotoShop". I had to pause the video and take that in, because that exactly what I was doing :D

@Yahriel 7 лет назад

@3:37 REBOOT REFERENCE I LOVE YOU

@lucasmelo010 5 лет назад

Amazing video. Very well explained and got major concepts from the evolution of OS. Thank you for the lesson!

@kevon217 Год назад

great crash course playlist!

@altres16 7 лет назад

Very good episode!

@ddssi 4 года назад

Amazing lesson.😍 Who agrees with me?

@jordanhall1136 7 лет назад

Can't wait for the next one!

@FitzRave 4 года назад

Wow I finally understand the true purpose of virtual memory

@kurtlindner 7 лет назад

7:38 Re:Boot reference -I love you.

@jackoftraes2122 5 лет назад

I'm glad that someone else noticed 😃

@JayAyers 4 года назад

I was like... is that Hexadecimal? It is!

@oslonorway547 7 лет назад

Oh the good ol' days, back when we had to load an iPhone onto a truck and transport 10MB across the country.

@apefu 7 лет назад

Never underestimate the bandwidth of a truck hurdling down the road fully stocked with iPhones.

@aggbak1 7 лет назад

Oslo MGTOW Ayy Mgtow

@madLphnt 7 лет назад

The good ol' days juuuuust before Counter-Strike came out. mmmm the joy of playing what i knew at the time would be the most enjoyable game ever to be played again. still playing :) 1.6 too ppl cmon dont even ask.

@kurtlindner 7 лет назад

Garbaz OMG! That is a number crunching orgasm right there.

@Neojhun 7 лет назад

A form of IPoAC. With modern devices like SD Cards, still can be much better than crappy internet. en.wikipedia.org/wiki/IP_over_Avian_Carriers

@celinehabbestad9380 9 месяцев назад

love the video! learn more from this than 8 hours studying :) btw where can i get the t-shirt?!

@tiamabderezai5374 6 лет назад

Great, awesome, fantastic video!

@EnragedSephiroth 7 лет назад

Megabyte and Hexadecimal from Reboot... I love it

@simonzenn 5 лет назад

Love the ReBoot reference

@vonneely1977 7 лет назад

Crash Course releases operating systems at the same time PBS releases quantum field theory. If you need me, I'll be watching The Matrix.

@h3ct0rjs Год назад

As a professional engineer with extensive knowledge on os and networks I do reall enjoyed this video.thank you

@haroonrasheed2568 4 года назад

Super cool nerdy explanation

@kasakai7215 6 лет назад

I love this so much! Thank you,

@MadhuExplorer 4 года назад

short and best explanation.thank u

@eughenes95 7 лет назад

I think she should have mentioned that UNIX is still with us in the form of Linux and Android, it really makes you appreciate the age and amount of work that went into these things. (also BSD and Darwin :) ) To me its astonishing how even after all these years, even if the way we do computing has changed completely, Linux is still very much a multi-user system designed for main frames; you can see it everywhere from user management and the permission system, to the way tasks are handled, the filesystem and the presence of TTYs. The core principles of UNIX are still very much present. Personally i find amazing how stratified, complex and messy Linux is: it never really changed from that original design, it only grew is size and functionality: you can pick up a UNIX manual from the 1980s and find that 90% of the information in there still works with some very minor changes, it blows my mind :D

@wumbology8421 7 лет назад

The only modern UNIX-certified operating system is macOS. Linux-based systems and Android are merely UNIX-like.

@eughenes95 7 лет назад

i assume you mean its derived from AT&T UNIX? I was fairly sure Darwin was based on BSD... anyway i meant it more as 'the legacy of UNIX' rather than a strict successor. besides i was talking in terms of fuctionality and philosophy :)

@noahw4623 6 лет назад

It's because of Linux tries to follow POSIX when possible.

@theCTCamp 7 лет назад

Fantastic Reboot reference!

@kirbymarchbarcena 7 лет назад

Can't wait for the next episode...

@awakening882 4 года назад

beautiful summary!

@lilybohr Год назад

Watching this for my operating systems class.

@Sethben 6 лет назад

Plug and Pray!! love it!!

@andrewgalloway8012 6 лет назад

I spotted Hexadecimal from ReBoot!!! This is the best show on RU-vid!!!!!!!!

@markd3131 7 лет назад

I've had my laptop since November and it's a little fitting that the first audio jitters (pre-bluescreen noise) I've noticed happened when watching Crash Course Computer Science immediately before she says the words "crash the system" at 11:21