Parity Check

Parity check is a simple method of checking for errors in a communications systems.
I'm Mr. Woo and my channel is all about learning - I love doing it, and I love helping others to do it too. I guess that's why I became a teacher! I hope you get something out of these videos - I upload almost every weekday, so subscribe to find out when there's something new!
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[@GregWoodsLancs]

Best explanation of parity checking I've come across. Most start with unnecessarily detailed explanations of XOR first. Great teaching style too.

[@sharonjuniorchess]

"So we have a protocol for this" "Huh?" "That's it" Brilliant exposition.

[@SyafiqMansor16]

If my lecturer is like this, attending lectures would not feel such a burden

[@SyafiqMansor16]

it definitely did. I love your style of teaching. Thumbs up!

[@bruteforcesearchparker2885]

Eddie Woo sir you are such an amazing teacher....sir can you please help me out with RS flip flop???

[@bruteforcesearchparker2885]

Eddie Woo please reply ASAP my exams are comming

[@ZoneZap]

@@bruteforcesearchparker2885 rip

[@haroon803]

@@ZoneZap Rip to our brodah.. btw i have an exam tommorow

[@Rockstar4GTA]

Thank you Mr. Woo, I am a programmer. Your teaching was really helpful. I was quite confused about this but your brilliant teaching and enthusiasm was really joyful and helpful. Thank you very much.

[@clintonoshea]

Mate, you are an INCREDIBLE teacher. If only the lecturers at my uni were as engaging and cogent as you, I'd be a much smarter man today. Sir: I salute you.

[@eafcb]

Your enthusiasm, and the "huh?" sound effect of the previous videos was great, I love it!

[@jasgarcha4783]

Eddie......if you're there, this was a huge help. Just studying for my COMPTIA A+ and a section on Error checking and Parity went over my head. Clear and all the details I needed. Thanks again😊👍

[@anonInDE]

Oh please have more videos about communication systems such as this! I'm currently a first year computer science student, and this course so far is the hardest course I'm taking! Your videos explain this stuff really well!

[@anamorato]

You are a God-send and an amazing resource! Your videos are amazing and help out so much, God bless you

[@HishamHinai]

***** thank you for teaching me what my teacher barely did

[@AL-go2mv]

Amazing job explaining the material! My professor is so unhelpful and rude and I have been struggling in his class. It is nice to see someone who really knows teaching.

[@jesusc2me]

Maaaan it's a joy to hear a lecture like this after what I've been going through this semester. Hard to even imagine being in a classroom where I could interact with an instructor this good. :,(

[@luckykennyboy]

Beautifully explained. I was entertained by the way you taught this concept and thus it helped me focus. The explanation was very straight forward so I was able to grasp this idea of parity bit very quickly. Thank you very much!

[@debraspann-horne7782]

Your teaching style and explanation(s) are truly marvelous and engaging!

[@michaelpereira5723]

Currently studying for my networking final and you helped me understand this concept! All it took was a simple explanation. Many thanks!

[@TheReaL35]

Thanks for making this somewhat uninteresting subject interesting. The energy in what you presents makes it much more interesting. I was reading about Parity in my A+ book and did not comprehend. Thank you for the tutuorial.

[@julia_ruby]

Thanks for the videos. Your enthusiasm makes you really easy to listen to.

[@MathemaEducation]

clear explanations, great expression and enthusiasm, great teacher! :D

[@Elisechingstah]

Thank you so much your vids are really helpful as i am currently struggling with computer science !!!

[@BlimeyGeezaMate]

This guy is a legend

[@Ranner198]

So is that guy being a keyboard warrior in the background 😪

[@devenabrahams4958]

Your videos are helping me a lot in my studies. Thank you for sharing this with us.

[@pagola]

excellent...a sign of a good teacher is that they use simple analogies to explain concepts...your a good teacher bro

[@wellslarsen319]

I second Mr. O'Shea's comment. You, sir, are an extremely talented communicator and teacher. I can't begin to tell you how helpful this has been. I have subscribed to your channel.

[@ABDULLAHAIi]

you are amazing please keep it up .. There is no Dr in my university could give me this level of understanding.

[@danielli8042]

love it! i have depression and wasn't able to attend my lecture that day. This has really helped me catch up. Great clear speaker. Inspiring. Keep it up :-)

[@nenani1817]

I just don't understand how you are so great at teaching!!! WOW

[@zedlepplin9450]

Finally I know what a parity bit means now, you're the Patrickjmt of digital and logic. Super effective way of teaching btw. Thanks!

[@8BitUzz]

You've got tons of amazing videos, and this one in particular really helped me. Subscribed, and I plan on using this channel as a teaching resource for myself from now on. Thank you!

[@8BitUzz]

Is the reason this is outdated or deemed less reliable now because, say there was some interference, two of the bits changed from 0 to 1? That way the computer would still think the packet being received was received properly.

[@8BitUzz]

Ahaha, nevermind, I just didn't get to that part yet :) At least I'm thinking ahead!

[@AlleDageCripWalke]

I would listen to this guy any time. DAT DERE AUSTRALIAN ACCENT. !! Very well explained btw!!!

[@MrWkirsten]

Eddie. You are seriously good at explaining things. Thank you so much man 👍👍 You are saving me a lot of reading time

[@prjthkmr]

Very good video Mr.Woo.You are one of the best teachers I have ever come across. Could you upload some more videos on digital electronics?

[@ayaatabualsaud7574]

amaaazing explanation!! it is 3 am and i am studying for my midterm tomorrow. thank you

[@nonyndefo]

I've been trying to understand these error detection schemes for a while now. Now I do. Thanks alot

[@LeetGarra]

Subscribed. I love the way you teach! So glad that you upload almost every weekday. Thank you!

[@Kerry_kit_slayer]

Thank you so much, the CompTIA book left my head spinning but this was easy to follow and engaging

[@ashwinpande7095]

The world needs more people like you... seriously

[@Testequip]

Hi Eddie. You certainly have a wonderful teaching persona. Keep it up!

[@ikibucuk]

Just keep going on your way for the sake of enjoyable learning,as an senior student of Computer Science Engineering ,i will follow you :)

[@evancaruso755]

Thanks for giving a comprehensible explanation on this topic. Great teaching too!!!!

[@perkhaahmad1136]

your teaching method is so nice and good.

[@NiteshKumar-sd2cz]

loved the explanation.... woo is awesome

[@longkou1079]

This is a really good teacher, engaging with his student. I would only wish I could have a teacher like him.

[@idkidk6722]

Wowamaxing explanation, I'm completely new to the subject and I didn't have a clue of what it was now I got to completely understand it

[@isobellaevans4805]

You are such a good teacher I wish my computer science teacher explained like you

[@annemiekfokke7594]

Thanks for the clear explanation! Please keep up the enthousiasm!

[@LanceClark]

Fantastic delivery of a very interesting subject. I don't think this concept could be explained any better. Keep up the great work :)

[@musica8531]

Hello mr Eddie I'm here a viewer from Hong Kong Your lessons is really fun and it would be nice if I can have the whole tutorial about parity check as i am totally confused in this topic.

[@ganeshchowdhary3024]

well explained! There is one doubt of two different versions that struck up in my mind. What if there is a change in two bits, then also we get even if the earlier bit pattern has even , odd if earlier bit pattern has odd.

[@believe_it712]

Hi i love your video and your voice is great , just some extra tips for people watching this video . Parity Checking can only only detect odd numbers of errors if two bits had error during transmission the error will not be detected .

[@hemant111]

u r a good contender for my English teacher in teaching style...btw thanks for the video, it was really helpful :-)

[@carenrosejabon6713]

i love the way you teach. how about longitudinal parity?

[@HassaanRaza]

very good content as usual! i bet you just love teaching.

[@navin.thamindu]

You are the god of explaining maths!

[@jimmurphy2784]

Very Very Good; I live your way of teaching and wish I was in your class!

[@Shreenivas_Karanam_V]

Thank you Mr.Woo for making it so easy to understand. But I have a question… “What if the parity bit also gets corrupted, along with a data bit, causing the computer to think there’s no error !?

[@Samanity]

I'm jealous of the students this teacher is teaching.

[@NeelSandellISAWESOME]

I didn't catch that even parity and odd parity were two different verification techniques the first time around. I had to watch it again. The idea of a parity bit also reminds me a little about the idea of a signed bit.

[@NaomiProngsGildert]

You explain things so well!

[@ForgottenLore]

The charisma of this teacher is amazing. :D

[@dmxkasun]

best lecturer ever!

[@newtoniantime8804]

You get a bad check if an even number of bits in the packet flips (..2,4,6,8) for both Odd parity check and Even parity check. 00110111 --> 01010111 etc. A protocol sending multiple copies of the package makes the check way stronger. I would recommend 4 packages.

[@wa7sh1409]

Great job man great job, my exam is tomorrow and this was a bit confusing

[@williamharvord7524]

Fantastic, I love that positive vibe about you! Most teachers lack your passion, humor and the eagerness to teach! Subbed, keep it up (:

[@pagola]

+William Harvord i think it because he is young...age has a way of zapping out energy and positive vibes...i hope he keeps his great teaching style alive

[@TheMissP]

this is so helpful...sir you can explain so much....so well

[@hohtz]

Very nice videos! Where are you teaching Mr Woo?

[@amanladia]

Your videos are great! I wish you were my computer science teacher!

[@saiphaneeshk.h.5482]

Classroom with no chalk in 2013 That's awesome.... Me in 2020 n still suffer from chalk dust as a student in college...

[@saulgoodman980]

Well? xD

[@ziboqiu2505]

Good that you can suffer in chalk dust still, we have distance learning all the time

[@tekoebr86]

Good explanation. I want to ask about the model of whiteboard that you used. Thank you with kind regards

[@Unimajin]

Thank you. You helped me complete my quiz with a perfect score! Much obliged sir.

[@ShlokKapoor]

These videos are amazing! thank you so much 😊

[@AngusGaukrogerDev]

Wow, what a superb explanation

[@har0111890011]

You're an excellent teacher sir !!

[@evilhobbes1]

Brilliant teaching skills

[@cankaraalioglu1390]

Great way of presenting! Thanks a lot.

[@ammx12407]

You sir are a gentleman and a scholar.

[@rahmat-ahmadi]

Great explanation. Thank you!

[@shariq6121]

What kind of board is that btw 😊 I loved the explanation Sir, and the board was great, technology has advanced so much!😁👍

[@sleeth]

Awesome teaching sir!

[@presentlee9403]

Ayyy this math teacher teaches computer science - networking. Love it!

[@bixstar1469]

learning is only enjoyable when I do it myself I wish you were my computer science teacher because the one I have is literally a robot - one tone and only covers content doesn't teach you got a like and a sub

[@hibye1177]

We need to protect this man at all costs for humanity

[@accietheking]

You saved this students life with the explanation

[@beekei_patel]

This guys is legend in teaching .I hardly loved it ❤️

[@delaneiraranda572]

God this is so helpful. He is the kind of teacher i wish i have in high school or even uni

[@sevmato]

How to do conversion to binary from decimal. You could approach it thinking "what's the biggest power of 2 you can fit".... or you can just divide by 2 and look at the result and keep doing that until you reach 1, which in my opinion is easier. 27 -> odd -> 1 26/2 = 13 -> odd -> 1 12/2 = 6 -> even -> 0 6/2 = 3 -> odd -> 1 2/2 = 1 -> odd -> 1 Final in reverse: 11011 152397 ... What's the biggest power of 2 you can fit? Gee I don't known, even with a calculator it's too bothersome to find out, and I'm too lazy to look at my 2^n table. 152397 -> odd = 1 152396 / 2 = 76198 -> even = 0 76198 / 2 = 38099 -> odd = 1 38098 / 2 = 19049 -> odd = 1 19048 / 2 = 9524 -> even = 0 9524 / 2 = 4762 -> even = 0 4762 / 2 = 2381 -> odd = 1 2380 / 2 = 1190 -> even = 0 1190 / 2 = 595 -> odd = 1 594 / 2 = 297 -> odd = 1 296 / 2 = 148 -> even = 0 148 / 2 = 74 -> even = 0 37 (36) -> odd = 1 18 -> 0 9 (8) -> 1 4 -> 0 2 -> 0 1 -> 1 Final in reverse: 10'0101'0011'0100'1101. Fits at least 3 bytes. or a 32-bit word. Now how is a parity bit set? A computer doesn't actually "count" the number of ones in a word, it just keeps track of what it sends over the wire. Whenever a 1 is sent over the wire, it toggles a control bit. At the end of the transmission it just sends the state of this control bit over at the next transmission clock pulse.

[@citizenOhana]

thanks, very helpful- is that a WII Remote you use there(for the board)?

[@brandonsloan4995]

This is excellent! I cannot wait to see what other content you have available! (After this exam ofcourse :P)

[@richatiwari4043]

thanks Sir. U explained very nicely

[@Happy123]

best teacher ever

[@billyb9573]

Cheers this is great you deserve a medal!

[@codshotedits]

great stuff, you also taught me how to convert numbers into binary without even meaning to!!

[@jenniferruiz2762]

Great teacher

[@Alishah189]

Hey Eddie Great Video! BTW my textbook says that the left most bit(MSB) is the parity bit. Are both correct? Like as the receiver and transmitter agree upon 'even' or 'odd' parity, do they also agree upon if the left most or right most bit is used as parity bit. Does one have any significant advantages over the other? Thank you.

[@perkhaahmad1136]

Great explanation.

[@jimmyhultman9410]

My god, you are a good teacher!

[@taniahernandez5003]

You explain so well!, Thanks!

[@May-sl8gk]

So does the parity bit decide whether its right or wrong? 1 for good and 0 wrong?

[@jiahuiyu4996]

amazing explanation! thank you

[@eamaogole3314]

love this teaching!

[@muziekliefhebber24]

Correct me if im wrong but I think you made a mistake. A parity check isnt 7 bits + a parity bit its 8 bits + a parity bit. So you get nine bits but the ninth bit will be removed at the reveiving end so that it doesnt affect the data. Reference: Comptia A+ study guide

[@mbasheer3515]

hi you become my teacher and i love my teacher i like your teaching method and also your voice is also good.thank you from you attempt that your are sharing your knowledge.

[@mbasheer3515]

thanks teacher