Example: IEEE 754 (32-Bit) to Decimal

  Рет қаралды 233,092

EducationAboutStuff

EducationAboutStuff

9 жыл бұрын

This video demonstrates how to convert from an IEEE 754 standard 32-bit binary number back into regular binary or decimal.

Пікірлер: 107
@philipwesley7790
@philipwesley7790 8 жыл бұрын
Thanks for explaining in just over 4 minutes what my comp science lecturer failed to do in several hours.
@CarlsonsRaiders
@CarlsonsRaiders 8 жыл бұрын
You explain to me in 4 minutes what my professor failed in an hour. Thank you!
@binexec
@binexec 8 жыл бұрын
Good explanation, but you really should've chosen a better example that has values behind the decimal rather than an integer 9.
@timburkhadt
@timburkhadt 8 жыл бұрын
+BiN4RY Good example but bad example? xD
@korayozyurt5985
@korayozyurt5985 8 жыл бұрын
+Tim Burkhardt imagine a bad example instead of BiN4RY :D
@binexec
@binexec 8 жыл бұрын
+Tim Burkhardt I meant to say "good explanation", my bad.
@holy-crusader6139
@holy-crusader6139 9 ай бұрын
@@timburkhadt you mean good explanation?
@holy-crusader6139
@holy-crusader6139 9 ай бұрын
@@binexec ohh okay now it makes sense
@kittye8237
@kittye8237 5 ай бұрын
I don't even know English, but I managed to understand it easily. Congratulations, your way of teaching is fantastic!
@miguellolgayol5380
@miguellolgayol5380 4 жыл бұрын
Simple, easy, direct, everything I wish my teacher´s classes were
@shinythps
@shinythps 9 жыл бұрын
Thank you! Very helpful. I had trouble understanding this, but your video cleared my mind from the confusion!
@carlosserrano5194
@carlosserrano5194 9 жыл бұрын
ShinyTHPS Helpful Video but I need to know, from where does it come the 1.0010..... ??? ThankYou
@samwashington6680
@samwashington6680 8 жыл бұрын
+Carlos Serrano well, when you convert back to decimal, you will always have to add that 1 because when you are converting FROM again FROM Decimal to IEEE 754 binary, you just remove 1.(you only care about fraction) and if you look at 2:20 , he got that number from pink highlight, that was considered a fraction because it is separated from other exponent and sign number... sorry for late response.
@NickTronic96
@NickTronic96 8 жыл бұрын
Thank you so much. Short and to the point.
@conscious5122
@conscious5122 Жыл бұрын
i'm being deadass all of the comments saying you explained in four minutes what my professor tried to in multiple hours is 100% sure. thank you
@carlosserrano5194
@carlosserrano5194 9 жыл бұрын
Forget it, I understood now... ThankYou Very helpful
@milesemanuelpaavola7994
@milesemanuelpaavola7994 5 жыл бұрын
Great video thanks for posting. I have a mid-term today, and its helping with my studies. :-D
@SleepyMicky
@SleepyMicky 8 жыл бұрын
Thank you so much, keep it up with the good work :)
@khalidbutt8733
@khalidbutt8733 5 жыл бұрын
damn, Quick and straight. Great tutorial
@carla.output
@carla.output 7 жыл бұрын
What could happen in the case of having floating points.. i mean... if the aswer is somthing like -9.35 or -35.25 ???? ?? sos!
@ferialebouariche9946
@ferialebouariche9946 9 ай бұрын
thaaaaaaaaaaaank you so much I spent a lot time on KZfaq to understand, finally i understannnd
@thegreenstuff215
@thegreenstuff215 8 жыл бұрын
how would you go about converting to double precision (64 bits)? would you proceed the same way and just fill in the extra slots in the exponent and mantissa with 0's?
@jermmylaso2267
@jermmylaso2267 8 жыл бұрын
Excellent explanation. Thank you!! Have an exam in 3 hours :)
@Tedoras
@Tedoras 7 ай бұрын
IK its been a 7 years but lool:) did u succeed?
@adampax
@adampax 4 жыл бұрын
really nice example. cheers :)
@xXTraceDerailmentXx
@xXTraceDerailmentXx 7 жыл бұрын
When the number is negative and it is in two's complement, do i have to calculate the absolute value of this number first, or is it ok to put only the 1 at the beginning of ieee754?
@weeeewooooweeeeewoooo
@weeeewooooweeeeewoooo 7 жыл бұрын
please give us an example using a number that isn't an integer!
@arthurytable
@arthurytable 8 жыл бұрын
i liked this example. i was confusing. thanks for help me.
@user-kv5xt4ph4y
@user-kv5xt4ph4y 3 ай бұрын
Thank you so much. You saved me.
@GrassLover9
@GrassLover9 Жыл бұрын
great explanation
@donotwatchthisvideo2
@donotwatchthisvideo2 5 жыл бұрын
Also do you have any video that deal with negative exponent in converting from decimal to IEEE745?
@aliceeverheart9237
@aliceeverheart9237 6 жыл бұрын
What if there are 1s in the significand? We wouldn't just ignore them like we do if the rest were zeros right?
@byrek1684
@byrek1684 8 жыл бұрын
thanks a lot, great video
@user-oj4pf5ob2p
@user-oj4pf5ob2p 6 жыл бұрын
Thank you so munch my brother ♥
@mohdchand9195
@mohdchand9195 7 жыл бұрын
thank you good explanation awesome
@DjikstraAlg_S.I
@DjikstraAlg_S.I 2 жыл бұрын
Hello, please how did you come up with 127 and P as 3? would really appreciate the response. Thank you.
@TheFlyguy31
@TheFlyguy31 9 жыл бұрын
Thank you..very well explained :)
@carlosserrano5194
@carlosserrano5194 9 жыл бұрын
Michael Knox Helpful Video but I need to know, from where does it come the 1.0010..... ??? ThankYou
@hulekm
@hulekm 3 жыл бұрын
@@carlosserrano5194 In case you spent last 5 years trying to find answer, here it is. 1, (before the comma) is always there . ,001 (after the comma) is from fraction (bit 0-22)
@creatividad_nula3178
@creatividad_nula3178 8 жыл бұрын
What type of round did you use? I've read that IEEE 754 uses 4 types of round. Thanks :)
@mzmzmzms
@mzmzmzms 5 жыл бұрын
nice work
@KW-dg6fs
@KW-dg6fs 7 жыл бұрын
So I am assuming the spaces are part of the notation? otherwise 100000 or 1000001 and many other things can be the exponent? edit: nvm, I just realize the exponent have to occupy 8 bits even if its 0000 0000
@mariusveierland815
@mariusveierland815 3 жыл бұрын
thank you very much
@lockercoin3693
@lockercoin3693 7 жыл бұрын
good job!
@donotwatchthisvideo2
@donotwatchthisvideo2 5 жыл бұрын
Thank you so much
@Gamuss12345
@Gamuss12345 4 ай бұрын
Can someone explain to me why it's a 1 in 2:42? I thought it has to be 0 as it's a positive binary number.
@user-gm2kz5vl1w
@user-gm2kz5vl1w 8 ай бұрын
Good explaination thanke your f❤
@mightyalekslive
@mightyalekslive 6 жыл бұрын
What if the exponent is 00000000 Would that mean that exponent = bias + p => 0 = 127 + p => p = -127 ??
@salikathiunuvanwijewardana9187
@salikathiunuvanwijewardana9187 6 жыл бұрын
thank you sir
@paulolopes5939
@paulolopes5939 5 жыл бұрын
i got a question the value of the exp. is always 8 no matter what????
@HopeeInk
@HopeeInk 5 жыл бұрын
good bless you 😭😭😭😭❤
@vedantu2254
@vedantu2254 4 жыл бұрын
Thank you
@starseer73
@starseer73 7 жыл бұрын
what do you do if there are still values after the decimal after moving it??
@michaelbauers8800
@michaelbauers8800 6 жыл бұрын
You probably figured this out. But in case someone else was confused...consider what .1 means in base 10. It's in the 10^-1 position ( the 1/10th position). 1*(1/10)=1/10=.1 It works the same way in base 2. .1 in base 2 is 1*2^-1=1/2=.5. In base 2, the places to the right of the decimal place are 1/2, 1/4, 1/8, 1/16, ... and so on. .111 in base 2 is, in base 10, 1/2+1/4+1/8=(4+2+1)/8=7/8=.875. Just remember that for all bases, the places of the number are the powers of the base. In base 10, we have ... 10^3, 10^2, 10^1, 10^0, 10^-1, 10^-2, ... ( 1000, 100, 10, 1, 1/10, 1/100). In base 2, we have ...2^3, 2^2, 2^1, 2^0, 2^-1, 2^-2 ( 8, 4, 2, 1, .5, .25).
@Chip8000
@Chip8000 6 жыл бұрын
fucking legend. thank you ;)
@ManalManal-eb8ri
@ManalManal-eb8ri 8 жыл бұрын
thank you
@lockercoin3693
@lockercoin3693 7 жыл бұрын
thx man!
@adamdebesai
@adamdebesai 8 жыл бұрын
Great explanation
@spillitnow
@spillitnow 5 жыл бұрын
What does bias mean in this context? How do you know the bias is 127?
@hughmungus1572
@hughmungus1572 5 жыл бұрын
yeah I'm wondering the same. Poor explanation.
@igormeo8744
@igormeo8744 5 жыл бұрын
In 32 bit the bias is 127
@carlosserrano5194
@carlosserrano5194 9 жыл бұрын
Helpful Video but I need to know, from where does it come the 1.0010..... ??? ThankYou
@combatcraz2254
@combatcraz2254 3 жыл бұрын
this one is known as a hidden 1 because we hide it when converting from decimal to binary
@serignembackecoulibaly9864
@serignembackecoulibaly9864 2 ай бұрын
thanks you
@confianceallah9901
@confianceallah9901 7 жыл бұрын
Merci ......trés bien
@shawnkhoo1949
@shawnkhoo1949 3 жыл бұрын
This video is so simple some steps just doesn't make sense without explanation. Like how did he get 127 for bias? And why the p = 3 isn't brought into the next equations? SMH
@SugandhiVerma
@SugandhiVerma 3 жыл бұрын
how does 127 + power came?
@armanicanady7284
@armanicanady7284 4 жыл бұрын
why is the sign positive ?
@MrLennon70
@MrLennon70 4 жыл бұрын
Where did you get 1.0010.... ?
@joshoduyoye110
@joshoduyoye110 9 жыл бұрын
What if the p was a negative number? Like -1 ... How do you solve it then?
@xXGuitarFrom71Xx
@xXGuitarFrom71Xx 9 жыл бұрын
Josh Oduyoye I think if you get a negative p that means you must shift your point leftwards. Imagine you ave, like in the example, 1.001... (adding that 1, as the uploader said), you would just shift the point to the left, and the result will be 0.1001... That in terms of computers is a non-normalized number, because its integer part is 0...
@husnainfayaz
@husnainfayaz 8 жыл бұрын
+GuitarFrom71 covers! i have hexadecimal i,e 3F 99 99 9A and p is -16 now what?????
@MyNegativeCreep
@MyNegativeCreep 5 жыл бұрын
I thought 0 = positive and 1 is negative?
@redarsenal8340
@redarsenal8340 8 жыл бұрын
how did you get bias = 127?
@duskshadow25
@duskshadow25 8 жыл бұрын
Whatever you get for the exponent part, you will always use that number to subtract 127 because in 8 bits the highest is 127 since it's from 0 to 127. In this case, if you have 1000|0010 = 128 + 2 = 130. Use 130 - 127 = 3. The idea of 127 is the same as adding a 1 in front of the fraction portion. It'll always be 1.###.... except in this case you will always subtract 127 because that's the highest it goes in 8 bits.
@debbiezepeda
@debbiezepeda 8 жыл бұрын
how does the exponent go from 128 to 130?
@theorangeiscool1
@theorangeiscool1 8 жыл бұрын
+Debbie Zepeda 1000000 = 2^7 = 128, but the exp is 1000010 which is 128 + 2 (because 10 in binary is equal to 2)
@guitarmenace1981
@guitarmenace1981 8 жыл бұрын
+theorangeiscool1 10000000 = 2^7 = 128
@duskshadow25
@duskshadow25 8 жыл бұрын
1000 0010 = 128 + 2 = 130. Remember that it's in base of 2. That's an 8 bit, so it goes from right to left 2^0, 2^1, 2^2, 2^3, 2^4, 2^5, 2^6, 2^7. Because the first four numbers are 1000, we know that is 2^7 (128). The second 4 numbers are 0010, which we know that is 2^1 (2). Remember that we ignore the 0. Therefore, 128 + 2 = 130
@janikti8605
@janikti8605 7 жыл бұрын
is this single precision numbers?
@aqleemasajid
@aqleemasajid 7 жыл бұрын
yes, which is 32 bits.
@angrycolonel1957
@angrycolonel1957 2 жыл бұрын
I watched the vid a few times and still don't know whats he doing :(
@SkillnoMusic
@SkillnoMusic 4 жыл бұрын
can you teach my teacher how to teach?
@tarabarghian4843
@tarabarghian4843 5 жыл бұрын
(C1F70000)IEEE754−32bit​=(?)10​ i dont know how to solve some sample like this yet :(:(
@haroldtran1023
@haroldtran1023 8 жыл бұрын
if p
@Lietuvis777
@Lietuvis777 8 жыл бұрын
+tran khanh then the point goes to the opposite side (left)
@haroldtran1023
@haroldtran1023 8 жыл бұрын
tks you =))
@sarints3147
@sarints3147 7 жыл бұрын
how do u convert 1000000000000000011111111111111
@sheepman6291
@sheepman6291 6 жыл бұрын
you sound like ryan reynolds.
@ABHA1111
@ABHA1111 7 жыл бұрын
suppose no. given was : 010000000 11000000 0000 0000 0000 0000 then as per my calculations P=1 ..., so in 1.1100000..... i shifted one decimal which gives me 11.100000..... so deciaml representation of (11) is 3 but answer is given 3.5
@viniciustinoco5261
@viniciustinoco5261 6 жыл бұрын
I know it is too late for you but for new person ... The answer is, to the left of "." you will have 2^-1, 2^-2 ... so you have 11 (equals 3) + 2^-1 (equal 0.5). The final result is 3.5.
@syedaiqrawaseem413
@syedaiqrawaseem413 6 жыл бұрын
why are u adding powers in minus ? and why you add 2^-1 in 3? whats the logic behind it please elaborate
@hidayetelayadi2321
@hidayetelayadi2321 8 жыл бұрын
affter doing every thing i got 1010.01 thats 10. ????
@Amonfobious
@Amonfobious 8 жыл бұрын
10.25
@MrStraightface
@MrStraightface 8 жыл бұрын
BIG OLE CHUNK OF CRAP. kudos lol
@TheJupiteL
@TheJupiteL 8 жыл бұрын
+Chris G lol, the channel name should be EducationAboutStufforwhatever.
@DeathToCockroaches
@DeathToCockroaches 7 жыл бұрын
How the hell is "P" = 3?
@dotexpress9689
@dotexpress9689 7 жыл бұрын
130-127
@ajiteshbansal8998
@ajiteshbansal8998 4 жыл бұрын
@@dotexpress9689 how did you considered the bias as 127 ???
@dieudobizitech2316
@dieudobizitech2316 8 жыл бұрын
je suis pour votre exlicaction
@bonfacemwangi6728
@bonfacemwangi6728 4 жыл бұрын
good explanation, but the value you chose is way too easy. in the end i find my self still lost
@yusufklc1184
@yusufklc1184 3 жыл бұрын
bro come on, wtf is 9.0??????? or cant u calculate 9.057 ? huh
@PauloConstantino167
@PauloConstantino167 6 жыл бұрын
wow you are very slow, you sure you understand it ?
@nmot97
@nmot97 8 жыл бұрын
Thank you
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