Representing Text in Binary (ASCII & Unicode)

Covering the general concept of character sets and character codes that are used to encode text into binary. Covering 3 important character sets: ASCII, extended ASCII and Unicode.
Made primarily for OCR GCSE Computer Science (J277) Paper 1. If you are following another course, be sure to use the playlists on my channel.
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[@JayJay8182]

Really appriciate your videos, my class was without a computer science teacher for a year and have now only a few months to learn the course. Your videos have helped tremendously and I recommend them to anyone looking to revise or learn. Thanks a million man.

[@arjumandvillagecooking]

Yes

[@SSJZak]

Great source, we use it in our class! Keep it up!

[@amazingf1238]

Honestly love your videos, Had CRAP ANNOYING teacher for computer science Y9&10, literally useless all she would do is go through trace tables barley explaining them and enjoy using the school punishment/behaviour system unfairly! Going to watch al the videos for paper 1 and 2 before the computer science exam in like two weeks! Good luck everyone. And sir you need more credit these videos need to be shared!!!

[@ibrahimsheikh1897]

These videos work for our new spec yeah?

[@jaysonfred8313]

@@ibrahimsheikh1897 yes they are.

[@ibrahimsheikh1897]

@@jaysonfred8313 banging haha. Nervous as fuck for the exam on Monday tbh

[@seth6101]

@@ibrahimsheikh1897 What did u get

[@ibrahimsheikh1897]

@@seth6101 A

[@arijalsabbouh7597]

Thank you. You explained it better than my teacher.:)

[@arjumandvillagecooking]

Thank you so much❤😍

[@millicentbc]

Just to let you know you added this video to the AQA paper 1 playlist twice. Less revision for me though, so I'm not complaining!

[@ComputerScienceTutor]

Ah thank you, I’ll sort them properly soon!

[@hamzad417]

Found it thank you.

[@jedburnie9755]

Hi sir, what calculations can come up in the OCR computer science paper?

[@SubscribeToTajPlays]

binary addition and mantissas

[@Stu67nt]

In the exam should i say Unicode uses 16 or 24 bits?

[@PenguDZN]

You got me a 9, thanks!

[@MoDesigns1]

This is A Level though 😂

[@MoDesigns1]

nvm its not

[@dominicscott6646]

'The American Language'

[@MarkFidell]

Yes, I had a little chuckle at that one also.

[@aryansiddiqui3574]

Hey, I had a question. Does original ASCII use 8 or 7 bits to represent a character? Because in the definition it says it's a 7-bit system, but doesn't original ASCII have 8 bits techinally because the first one is a parity bit? So in the exam would I say 8 bits or 7 bits?

[@ComputerScienceTutor]

I'd keep things simple and say 7 bits for original ASCII, 8 bits for extended ASCII

[@krystallounds2097]

Do I need to know all 127 ASCII characters in my head for A Level Computer Science?

[@alialghaffari4631]

Don’t think so…

[@shuncho7844]

probably lmao😭

[@kayfactor6663]

good luck for tomorrow

[@AABBULLAH511]

does Unicode character set represent most of the world's languages?

[@ComputerScienceTutor]

Yes

[@seth6101]

Dosnt ASCII Use 7 bits therefore has 127 characters and not 128 ?

[@ComputerScienceTutor]

It's 128 characters because it is 2 to the power 7. You may have thought 127 because when representing numbers, we always subtract one from the max value as 0 needs to be counted too.

[@seth6101]

@@ComputerScienceTutor Thanks

[@mahirulhuda6642]

who else is starting their paper 2 revision the week of their exam😅

[@amnas9077]

Mines tmrw 😭

[@mahirulhuda6642]

@@amnas9077 How'd it go then?

[@amnas9077]

@@mahirulhuda6642 it went alright, not too good not too bad, but definitely better than I expected. What about u?

[@mahirulhuda6642]

@@amnas9077 It was quite good tbh, but I feel like I could have got a level 9, but I mixed up 2 questions, on one of them I swapped black box and white box testing, and on the malware question I wrote trojan horse instead of trojan, so I feel like that is going to cause me to get a level 8😅

[@amnas9077]

@@mahirulhuda6642 ohh dw a grade 8 is still awesome! Everyone makes mistakes and u never know the grade boundaries might be low, r u taking a level computing or something? You seem to care about ur computing grade alot

[@legendaryubagel2383]

Who else is revising for the comp exam in last hour

[@t3kkrz426]

me

[@ItzKimchiii]

omg me i have it lit the next day n i have a whole list of topics to go through i dont even think ill be sleeping tonight

[@Zxrlorn]

btw you put it in the wrong playlist

[@abdullahpatel5517]

how does binary code represent characters

[@dragonblitz6718]

**EA**

[@shuncho7844]

goofy ahh pfp