Memory & Storage: Crash Course Computer Science #19
Memory & Storage: Crash Course Computer Science #19
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So we’ve talked about computer memory a couple times in this series, but what we haven’t talked about is storage. Data written to storage, like your hard drive, is a little different, because it will still be there even if the power goes out – this is known as non-volatile memory. Today we’re going to trace the history of these storage technologies from punch cards, delay line memory, core memory, magnetic tape, and magnetic drums, to floppy disks, hard disk drives, cds, and solid state drives. Initially, volatile memory, like RAM was much faster than these non-volatile storage memories, but that distinction is becoming less and less true today.
CORRECTION: AT 5:00 we say “around 9 kilobytes” when we should have said “kilobits”.
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calls a ssd a hard drive
omg can’t watch bc you are extremely irritating
Hi..Could you please tell me how do we technically explain transferring the data from one memory to another. Do we short the circuit between two points and the voltage becomes same at both points. Please advise…Thanks !
why do you guys have to speak so fast? sometimes its so hard to get you if someone is listening to the terms for the first time. Isn’t your videos for people who already doesn’t know the topic? you need some time to realize what you have heard and then move on to the next sentence….
Great video!
goddess of explanation !!! ~wink wink~ (~.*)
so the ram works to if i take off my computer the data gets saved for another time?
sorry for my inglish 🙁
why are you talking so fast? IF Mr Donald Trump runs behind you?
Thanks
Fascinating! Really well done, thanks!!
Do you play minecraft I ask this question because there is a Minecraft creeper doll behind you
I wanna know hoe hard drives store data
ఠ_ఠ🤔🤔🤔🤔🤔🤔
50 bytes-y,521 bites 4$=80.4% 18Nb
You are a very attractive young lady
11:00 Sure, the seek times may be slow by comparison, but the fastest consumer SSDs out there are about as fast in terms of bandwidth.
Madam! Plz guide about memory
Basically two types of memory
RAM and ROM ? So ROM is the fixed memory which means non changeable like as storage means harddisk etc so you were asking that memory is the temporary but ROM is permanent and it is also part of memory?
To think, I have a 5 terabyte external hard drive the size of my palm!
Great video. Thanks for posting!
_Crash Course_ for *Computer Programming*
Hi
I have a question . Why there are so many short terms memories available ? Why not only one ? Why so many like Ragisters , Cache and Ram . Need your help and waiting for your reply 🙄
This was really good.. but anyone like me listening to this is a newbie and you speak TOOOOO fast and it’s hard to follow. As a television executive, my advice would be to SLOW down so we can follow your information. The content is excellent, but not if we can’t understand it. Thanks so much~
I remember trying to save word docs with loads of clip art on a floppy disk but was so confused as to why I could never save even one document while my mum was able to save lots of word docs with no pictures 😂 Eventually it clicked
Currently studying computer science. This blows my mind!
so do solid state drives work in the same way as RAM? How do they work?
Plz speak slowly….
I feel superior to others for having a childhood that coincided with the tail-end of the floppy disk lifetime.
but how this SSD work. how these disks are non-volatile?
Very useful
Very good presentation
People can know about things after they’re stopped being produced
"9216 bits, which is about 9 kilobytes" wouldn’t it be kilobits? because 9216 bits is more around 1 kilobyte
I have to mirror many fellow commenters in saying boy I feel old. I remember as a sophomore in high school back in 2004 and I was the first person to get a 256 MB flash drive (for $50!). I was the ‘big man on campus’ because of it (or at least in my geeky circle of friends). I think part of what makes us (late 20’s, early 30’s) feel so old is that we grew up right through the technological explosion.
its look like your in a hurry,, you talk very fast,, can you please speak a little slow
10:35
I can’t believe you’ve done this.
Can we have short notes on that?
Really good memory hierarchy pyramid chart 8:53
Please, we really need Russian subtitles!🙏🙏🙏
Now I feel ancient. i remember floppys like yesterday
Damn, I totally have some old floppy disks and I need coasters.
I came here hoping I would learn how modern ram works not a crash course on its history
Please go a bit slow
paper punch cards and his cousin hahaha
0:55 Only come here for this!
4:59 You state that 9216 BITS is equal to about 9 kiloBYTES. But there’s 8 bits to a byte, so this statement is incorrect.
note to self: do not invest in ram
🗽🗽
First learn how to speak slowly.
Wow! This video is very educational and explained amazingly well!.. there were other information i dint find in other videos about history of memory but found in yours.. Thanks a lot!!