Computer Skills Course: Bits, Bytes, Kilobytes, Megabytes, Gigabytes, Terabytes

Computer Skills Course: Bits, Bytes, Kilobytes, Megabytes, Gigabytes, Terabytes

Free Computer Skills Course: Digital Storage Terminology.

Learn about Bits, Bytes, Kilobytes (KB), Megabytes (MB), Gigabytes (GB), Terabytes (TB).

Transcript:

Let’s continue learning about how computers store data. As we learned earlier, computers use the Binary number system, which has only two numbers, one and zero.

The word that’s used to describe these binary digits, which can be either one or zero, is Bit – B-I-T = It’s short for ‘binary digit’ and it is the smallest unit of data in a computer.

Now, these Bits – these ones and zeroes – are used to store all kinds of information, from the text that appears on your screen, to the colors of an image, to the sounds that come out of your speakers. To store information like this, we use a bunch of bits together. The number of bits we have determines how much information we can store.

Now for our next term: It turns out, if you take 8 of these bits – 8 of these ones and zeroes – and put them together, that’s called a Byte. Sounds like a mouthful of food, but it’s spelled with a ‘y’ and it refers to 8 bits put together. In everyday terms, you can think of one byte as the amount of space it takes to store one single letter or symbol in a text document. If you wrote a short story with 1000 words, this would take up 1000 bytes of storage space.

That brings us to our next term. If you take 1000 bytes and put them together, that’s called a Kilobyte, often abbreviated as “kb”. Now, I will mention just once, that technically there are 1024 bytes in a kilobyte, and that’s because computers use binary and everything comes in powers of two. That said, it doesn’t really matter, it’s ok to think of a kilobyte simply as 1000 bytes, similar to how a kilometer is 1000 meters. One Kilobyte is enough space to hold about two pages of text. Back in the late 1970s and early 1980s, the 5.25” floppy disk was a popular storage option, and it could hold 360kb of information.

So now, what’s it called if you have 1000 kilobytes? It’s called a Megabyte, often abbreviated as capital “MB”. One megabyte is enough space to hold about 5 books, or one photo, or one minute of music. Back in the 1980s, we had these things called floppy disks. This was a 3.5” floppy disk that held 1.44MB of data, which was pretty good at the time, because most files were pretty small.

Alright, now you’re probably wondering, what’s it called if you have 1000 megabytes? 1000 megabytes is called a Gigabyte, and it’s enough space to hold about 400 books, or a thousand pictures, or 16 hours of music. By the mid 1990s, you could buy a 1GB hard drive for a couple hundred bucks. Today, you can buy 1 GB flash drive for about $5.

Ok, so what’s it called when you have 1000 gigabytes? 1000 gigabytes is called a Terabyte, and is often abbreviated as “TB”, and it’s enough space to hold about 400,000 large books (that’s about 30 school libraries), a million pictures, or two years of continuous music. Today, you can buy a 1TB hard drive for under $50. Yes, it’s pretty amazing.

So, to recap, we talked about Bits, how there are 8 bits in 1 byte, how there are 1000 bytes in 1 kilobyte, and 1000 kilobytes in 1 megabyte, and 1000 megabytes in 1 gigabyte, and 1000 gigabytes in 1 terabyte. I hope you’ve enjoyed this video and that you have a better understanding of digital storage terminology.

50 Comments

  1. Arunima Maiti on November 6, 2018 at 7:05 pm

    Nice Video



  2. Offical Jacob on November 6, 2018 at 7:05 pm

    How about a pettabyte?



  3. Rikesh shrestha on November 6, 2018 at 7:09 pm

    THANK YOU!



  4. Singing Steef on November 6, 2018 at 7:09 pm

    Thx i did pass my test👊🏻



  5. The Tongue Of Angels on November 6, 2018 at 7:10 pm

    I’m stuck on the "1024" how do I work that out??



  6. wang dickson on November 6, 2018 at 7:17 pm

    thanks alot!



  7. James Martin on November 6, 2018 at 7:17 pm

    Well done. I watched this with my son.



  8. Jose and the Roaches on November 6, 2018 at 7:18 pm

    thanks you helpped me with my homework



  9. C I R A D S on November 6, 2018 at 7:20 pm

    Thank you so much!
    This helps me a lot!



  10. raprex on November 6, 2018 at 7:21 pm

    At 1:15 you say that a 1000 words would use around 1000 bytes of storage space. This is incorrect. It should be a 1000 characters use around 1000 bytes. Great video, my young son is very interested in this.



  11. 【Rush Plays】 on November 6, 2018 at 7:21 pm

    soooo, does that mean that there are 8 quadrillion bits in a tb?



  12. MUDAR Abdullah on November 6, 2018 at 7:22 pm

    Beautiful



  13. Eliz Donovan on November 6, 2018 at 7:22 pm

    Very good explanation. Thank you.🙂☘🌲



  14. Chidura Shiva Jyothi on November 6, 2018 at 7:24 pm

    Thank you sir



  15. Luiza Shukurova on November 6, 2018 at 7:24 pm

    Thank you so much very good explanation!!!



  16. iftekharonadventuring on November 6, 2018 at 7:25 pm

    I think at the beginning of the video what you said it would be 1000 letters instead of 1000 words.



  17. Jack Youn on November 6, 2018 at 7:26 pm

    What about teraflop? The Xbox Scorpio could hold 2



  18. Something Else on November 6, 2018 at 7:27 pm

    Thank you that was really useful



  19. BAngelZ 09 on November 6, 2018 at 7:27 pm

    Great explanation



  20. S.N.S DEEP on November 6, 2018 at 7:30 pm

    great video but what about PB



  21. IAMNUMBER2SIX BAD AMVs on November 6, 2018 at 7:30 pm

    excellent videos bro. keep doing em



  22. Ashith Vlogs on November 6, 2018 at 7:31 pm

    Whoa 1 TB = 2Years Of Continuous Music.
    That’s A Lot Of MUSIC



  23. Mohit Subedi on November 6, 2018 at 7:33 pm

    Thanks a bunch



  24. Kian Park on November 6, 2018 at 7:34 pm

    Thank you, Dane! I’ve learned something today. Great video!



  25. Pooja Singh on November 6, 2018 at 7:38 pm

    Best explaination thanks



  26. samkit singh on November 6, 2018 at 7:39 pm

    Plz clear my doubt that…How are you equaling/comparing the size(kB,MB…)with books.For eg..You said 1GB is enough for storing about 400 books WHEREAS 400 books can be stored in almost some KBs nowadays in pdf format or in .txt……………So why you said 1GB = almost 400 BOOks



  27. Anum Memon on November 6, 2018 at 7:39 pm

    Very informative and clear explanation



  28. DaddyModder YT on November 6, 2018 at 7:40 pm

    amazingly explained



  29. iThunderGamePlay23 on November 6, 2018 at 7:41 pm

    you forgot exabyte, and zettabyte



  30. Zemen Teshagari on November 6, 2018 at 7:41 pm

    what a nice informative video. it is just great sir !!



  31. sohan vadavathi on November 6, 2018 at 7:45 pm

    very useful video…. thank you sr



  32. Enrique Montano on November 6, 2018 at 7:45 pm

    I get it now 🙂



  33. Smash Bandicoot on November 6, 2018 at 7:48 pm

    What comes before Bit?



  34. John Plays on November 6, 2018 at 7:48 pm

    what comes after TB? PB?



  35. Indrini Mazumder on November 6, 2018 at 7:50 pm

    where is petabyte.



  36. Alex Ennerfelt on November 6, 2018 at 7:51 pm

    A single byte can be a single character. The comparison of: a short story of 1000 words require 1000 bytes (1kb), is really inaccurate unless it’s a thousand one letter words and punctuation. But that wouldn’t make for a good story.



  37. JENNY JAY on November 6, 2018 at 7:53 pm

    Brilliant



  38. GASTER on November 6, 2018 at 7:53 pm

    what is is it called if you have 1024 terabyte?



  39. ABI NANDHU on November 6, 2018 at 7:55 pm

    thank-you Dane. it really helped😀



  40. Samina Khalid on November 6, 2018 at 7:56 pm

    thanx i learned so easily



  41. Dilshsd Haji on November 6, 2018 at 7:56 pm

    I really like the video and it’s helpful. But I have questions what app did u use for the video please answer



  42. william greenwood on November 6, 2018 at 7:58 pm

    OK , how much room do I need to keep window 7 and all when I cone my hard drive to a terabyte ??? in other ware how much space do I need to keep ??



  43. Nate Friedman on November 6, 2018 at 7:58 pm

    How is it that 1 MB can hold 5 BOOKS and 1 PHOTO but a GB can hold more photos than books, isn’t that the other way around?



  44. NA 19 on November 6, 2018 at 7:59 pm

    1:15 thousand letters not words



  45. Crash FTW on November 6, 2018 at 8:00 pm

    Hi Dane
    Can you correct me on something, you say 1 byte is enough space for single letter or symbol, but then you say thousand words requires thousand bytes. Did you mean to say letters instead of words?



  46. Someone is here on November 6, 2018 at 8:00 pm

    1 kilobyte (KB) is actually 1000 bytes exactly, there is a common confusion about this. kilo, mega, giga etc. is always a power of 10. For power of 2 we use kibi, mebi, gibi. For example 1 kibibyte (KiB) = 1024 bytes. Part of the reason why there is a confusion about this is that Windows operating system uses wrong terms that does not comply with ISO standards. On Linux and if I remember correctly Mac OS X there is a difference between KB and KiB and they are calculated correctly. That is why a 8GB flash drive is "7.45GB" on Windows and 8GB everywhere else.



  47. Jerrico King on November 6, 2018 at 8:04 pm

    So therefore if I had a music thing that lasted for 1024 minutes that home thing would be a gigabyte



  48. Israel Alonso on November 6, 2018 at 8:04 pm

    A thousand words would require much more than a thousand bytes as each word is several letters long…



  49. Pencil Stick on November 6, 2018 at 8:04 pm

    I guess you can say this video was very byte sized.

    HA!
    Ha
    ha

    heh…



  50. David Kissner on November 6, 2018 at 8:05 pm

    1 byte equals 1 single letter. If you wrote 1 thousand words you’d have 1 thousand bytes?… that doesn’t make sense. 1:08