Parity Check Problem

Parity Check is not a foolproof method of checking for errors!

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!

[nickhadi]

I don't usually comment on youtube. But you are so Passionate in your teaching. It's crazy. I hope all teachers can be like this. Thx for your value here. 

[albusaidi]

Love your way of teaching. You are one of an excellent teacher. Go ahead and I am coming here just to understand parity check.

[NcognitoXx]

Came across Parity Check while reading through the CompTIA study guide, I did not understand fully. Being able to visually see the process cleared it up in a minute and on top of it this was explained very well, thank you so much. 

[YVZSTUDIOS]

Wow. You explained in 3 minutes & I understood everything while my prof. needed at least 20 min with an average understanding rate of 33% :^)
You are awesome! I'm gonna check out your other videos as well

[danielcardozo]

we more teachers like you, it's so much fun this way, i don't really know how to find the words to tell you how awesome this is, but thank you so much :)))

[yuvalmor]

I wish my teachers were like you man. Then I would actually look forward to class.

[DarrenTalksTech]

What a fantastic teacher! I wish more teachers were as passionate and understandable as you. Please keep the videos coming.

[jds_edits]

I learned more in 3 minutes than my whole year of Information Process Technology course lol

[Popsickle]

I like your teaching style man! good confidence and fluency i really enjoyed it! i needed to know what this topic was for an exam soon and it really helped!

Thank you and continue to do well!

[tvtechvlogging]

Got my gcse tommorow and had the same crap teacher for two years, bless your teaching style 🙏🏻

[youngboyab]

you are the most awesome teacher I've ever seen.... hats off to you....

[galaxytraveler]

I wish I had you as a professor....mine is old, grumpy and makes everyone not want to ask questions because he responds as if we are stupid. He is also sexist.

[labhax-lab]

Hi Eddie,

love your channel... Helped me a lot while preparing for information technology exam.
Thanks you very much!!!  I will recommend it ..  

[عدنانيونس-نز]

hi i am from the middle east....
exactly from saudi arabia... i liked your videos.. as the others say.. i say that your way of teaching is great and motivaited... thanx i already subscribed in your channel.

[XX-ytmy]

I like the way you teach. Already subscribed

[alyafatini]

i want to ask, this single bit parity right?   how about for two-dimensional bit parity? can u show it how to detect error

[XCOOLMANX]

so how do you use a parity check with both problems / prevent wrong message from being recieved ?

[naseebullahahmadi]

Hi Woo,

Just a question. This suff that your explaining like (Parity and checksum) is that in Univeristy class? Or are you just going around different schools. In other words,  are you teaching in univeristy or high scholl? Because i am studying the same topic. I find your video really beneficial. Thanks

Sorry for my lanuage 

[nadeemjq]

Dear +Eddie Woo, this is awesome! Great explanation.

However, I'm not sure about your probability calculations. Shouldn't one include the chance of interference?

Suppose the chance of a bit getting flipped is 1% (I don't know if this is accurate).

Then the probabilities should look something like this:

1) Both bits uncorrupted: (1 - 0.01)^2 = 0.9801
2) One of the bits corrupted: (1 - 0.01) * 0.01 * 2 = 0, 0198
3) Both bits corrupted: 0, 0001

The parity checking should respond correctly to 1 and 2, and therefore 99, 99% of all errors (given interference prob of %1).
Which is much larger. Even if the chance of corruption is 10%, still the parity checking should respond correctly to 99% by the same logic.

This might be nitpicking, but please do tell me what you think about the observations above.

Thanks again for so many great videos.

[alovelyboy]

thank you alot .

your videos helped me alot to study for my exam.