Lesson 6.3 : Fractional numbers in binary

[kevin]

Thank you, this is really helpful. I was learning python on Udemy and couldn't understand why 0.1+0.2-0.3 doesn't =0. The course provided explanatory notes but it didn't help. Now after watching your video it finally makes sense to me

[cherylwhalley]

Thank you!!! i was trying to understand this from my textbook and couldn't grasp it, this cleared it up for me!!

[jamestrujillo]

What a genius. Thank you carl. Thumbs up!!!👍 I had a hard time and now you made it clear. Thank you

[OvhanDevos]

Also another thought, ontop of this, another advantage of seperating the fractional numbers and the whole integers is you no longer need to tell it how large the integer part of the whole fractional number is, instead of saying 0110..00011 and then a third number 0010 stating that the integer is 4 digits, you only need 0110 and 0001, so that is 5 bits you save instead!

[thomasdessert]

Nice, but how do we convert from fractional binary to BCD?

[OvhanDevos]

Why not just store the decimal as another int and then just tack on the second int, same number of 1/0's but much more accurate! since you can make exact numbers. thing about it, to get close to 0.1 you had to do 00011 when normally you could just use the ones place of a bit, I E, 0001, which is one bit smaller, or even to say a 10th would be 1010, still smaller, is there some sort of advantage with this system with larger fractional numbers?

[oddball]

Well for example with that system it would take 20 bits just to make 0.02

[ralphrada]

thank you whole bunch of Hindi out there.

[Calm_Energy]

ah my brain hurts when I see 0.1 has 1/2 but it make sense... my big take away is if I see a double precise floating point value with a ton of 1s at the end I need to understand that I'm not necessarily looking at a large range of numbers after the decimal, say pi, but I'm just looking at a more precise number. I have to fight my base-10 based instinct!

[grahamnelson]

I came here trying to learn the binary language of moisture vaporators.

[GerardoZuniga]

Great lesson !! But whats up w the blank (white) screen??. Or emoty space on the video??
Need improvement
Class is great tho.

[mariocincu]

multumesc frate te iubesc pup de la valcea

[sgguyuk]

Who thinks decimal system should be replace with binary it would make everything a lot easier instead of using 2 systems.

[mohandalansari]

You still didnt explain how to compute fractions to binary. Thanks otherwise for the great content

[roobend]

Yep, anyone watching this for the first time who has a basic understanding of binary (or have watched earlier videos) just skip directly to 7:24 where he states how it is done in one simple sentence. If you still don;t get it then maybe watch the rest of the vid I guess. But this is really rather simple stuff, doesn't require an 8 minute video.