| 73Q Music Videos | Vote On Clips | Submit | Login   |

Reddit Digg Stumble Facebook
Desc:Was binary.
Category:Nature & Places, Educational
Tags:computers, egypt, China, math, binary
View Ratings
Register to vote for this video
Favorited 3 Times

People Who Liked This Video Also Liked:
Monsters Inside Me - Face Eating Parasite
Man brings lion to party
The 5 Sony PlayStation Ads that Changed Gaming (Double Life/SAPS/Mental Wealth etc) - Kim Justice
Stud on Love Connection
2 guys, 1 flute
Billy Jean on the Uke
Beware the wolf!
Olbermann on the Arizona Shooting.
Bill - "Big Foot"
Comment count is 13
baleen - 2010-12-15

I've always hated math, but this was really cool.
pastorofmuppets - 2010-12-15
It's even simpler for the computer. Doubling is a left shift (e.g. 0011 becomes 0110). Also, looking at single digits, you can only multiply by 0 or 1 (yielding zero or the original number). So multiplying A * B becomes:
- is the rightmost digit of B 1? if so, add A to sum.
- left shift A and repeat with next digit of B

But binary is lame. ENIAC could count to 10 *and* strike fear in the hearts of cold war enemies. I want my computer to have tubes, dammit.
fluffy - 2010-12-15
The multiplication technique was nothing new to me (and of course it can be extended to exponentiation, where instead of doubling the number you square it, and instead of adding it to the accumulator you multiply it), but for some reason I had never considered that inverse method for division. If I'd learned math that way then maybe I wouldn't always just be grabbing my cellphone for the calculator app to do simple math.
yogarfield - 2010-12-15
those sleeves are ridiculous.
kwash - 2010-12-15
This seems so much easier than doing long division or multiplication.
Gwago - 2010-12-15
Why aren't we teaching this in school instead of memorizing tables?
fluffy - 2010-12-15
You'd probably have to either rework the curriculum around binary or still teach people how to efficiently multiply base-10 numbers by 2. Also, I wonder if memorizing the 10x10 table helps out other aspects of memory retention and so on.

pastorofmuppets - 2010-12-15
Like fluffy said, you need to double numbers (which itself requires tables). But people still use this method.


(His getting the "bits" up front is the same as repeatedly halving and checking the remainder.)

Robert DeNegro - 2010-12-15
Hey! Iggy Pop's pop!
Chalkdust - 2010-12-15
Iggy Pop^2

memedumpster - 2010-12-15
Also used in measuring ingredients.
pastorofmuppets - 2010-12-15
that's interesting. how does it make it easier? do you use the measuring cups with it?

jyrque - 2010-12-15
Register or login To Post a Comment

Video content copyright the respective clip/station owners please see hosting site for more information.
Privacy Statement