IC – Divide by 3
February 25, 2026 • EPISODE 299
How can tiny transistors do math? In this episode of Science LIVE with Roger Billings, discover how integrated circuits use logic gates and on-and-off transistors to multiply, divide, and process numbers. See how a simple “divide by 3” circuit is built—and how millions of these tiny switches working together make today’s powerful computers possible.
Roger Billings also talks about the engineering behind the Falcon 9 from SpaceX. In addition, learn how gallium could be used to generate hydrogen as a clean energy source, highlighting exciting possibilities for future energy innovation.
About DrB
Dr. Roger Billings is a visionary innovator whose work has touched the lives of millions of students and transformed the landscape of education. Widely known as “DrB” to the countless kids who benefit from his groundbreaking Acellus learning system, Dr. Billings has dedicated his life to advancing education through technology.
As part of DrB’s lifelong commitment to supporting education, Science LIVE was launched as a way to “give back” by mentoring students in conjunction with the Roger Billings Scholarship Program.
Read more about DrB »
About the Roger Billings Scholarship Program »
technology is amazing. To think how in1930’s at a movie theater it was being worked for mono and stereo sound and to see what kind of sound we have going to a theater now to watch a movie
gallium is cool
from NM loooved it. sat and watched it with my daughter!
Hi. Dr. B I learned today circuits and dividing . Thank you
Ay
So good to know!! It was really cool learning about how Fantasia was the first movie with improved sound.
i love the protoges!
Science is my favorite subject
We look forward to Science Live every week.
Watching from Cambodia.
Comment I enjoyed the cowboy math!
I look forward to this live every wednesday!
Who programs R-51?
Thank you for another great Science Live!
Hello from Arkansas!
I’m really glad they made a breakthrough with dealing with cancer! That’s going to be great for those people.
I like watching science live.
Science live is so awesome!
I like learning about the rockets!
protégés are always so funny with the inventionears sorry if I spelled it wrong hehe 😜
This video was so interesting. Can’t wait for next weeks video.
I LOVE SCIENCE LIVE!!!!
I love this video so much i learned a lot
Thank you for another great episode of Science Live.
Science live was great tonight!
Thank you for another amazing science live.
Can I be scanned next😂
Learning about Audio, Mono and Stereo was amazing!! i’ve been to a movie theatre twice and i love the effects by just listening with my two ears!
Great show this week, great secret weapon.
I love the videos!!
This was awesome! Loved it so much!!
My favorite part of today’s science live was definitely the part about gallium!
I love learning new things when watching the science live!
I thought it was funny and cool about the cowboy part.
I CAN USE IC TO DIVIED BY 3S AND ALL THE WAY UP TO 9
This Science Live was so fun! My favorite part was probably when the two characters Dusty Dave and Crusty Cal came on screen, that part was educational and funny!
Love it so much!
I love the science lives!!
This is my fourth science live and it was AmAzInG! I really enjoyed the part with the protégés.
This was my favorite video of the year so far! Thank you!
Hello, watching from West Virginia
R51 is my all time favorite!
I love this science live
Learning about the circuits was interesting. Great live.
Hey from Nevada!!
Science is so much fun
watching from MD
I found the section on the two track vinyl disks really interesting about how old record players could still play the stereo track normally.
Wow! That was so interesting.
Hi from Mississippi!
Hello from Texas!
Hello this is autumn from Chicago Illinois, and the rocket presentation was amazing and very interesting to look at.
WOW SCIENCE LIVE TODAY WAS AMAZING!!
The cowboy skit was very funny! And I actually learned a lot about circuit boards!
That was a great Science Live
From here in Vegas we get to see SpaceX in the sky sometimes.
I love the stories
I love science live
hi from texas
Very funny, love it!
The cowboys were so funny!
The stereo sound segment was very interesting.
I love Science Live
i love this show
hi from kentucky
If this new bacteria ends up being the cure for cancer, that would be amazing.
Loved tonight science live
Hi from Mississippi.
Looking forward to next weeks Science Live.
I wonder how much resisters you would need for an Integrated Circuit
I love science live
Love it so much!!!!
R51 is so nice! Can’t wait for Accellus World!
Hi from IL
hello from tennessee
I love r51
I liked the part with the graduation checklist!
My favorite episode so far
Caleb and David are so funny! They should make them teachers!
I love science and this was fun
I want to go to the moon!
I like that Allen Blumlein wanted to make movies sound more realistic. So he used stereo sound to making so that if a character is on the left side of the screen it will sound louder on the left and quieter on the right.
Love watching these every week!
Blumlei was a brilliant English electronics engineer He invented many important things in areas like sound recording, stereo sound, television, and radar He held 128 patents, which are like official papers for inventions.
Tonight’s live was funny!!
hi from new london science rules
The part about dividing was interesting
The part about the cancer eating bacteria was very cool.
Great show as always. Look forward to the new class.
I LOVE learning about technology. Can’t wait to see more next week!
Hi from ND
I like those songs where they go to one ear to another they’re cool.
I love science live!
Stereos are so interesting!
I loved the video this week!
Always learn something new
Hello from GA!!!!
I love science lives
Acellus is full of surprises!
We needed a girl in the inventioneers for sure
I love this episode!
Hello from GA!
I found the Wild West Division Show Down bit very funny. I knew Claudia was going to say something about not having the ic’s.
Hey from Louisiana
Hello from VA
I love science live it was fun today
Enjoyed seeing how different electric parts work together in science live.
Hi from tennessee
this episode was amazing!!!!!!!
I love these lives!
What a great science live!
Hello from the east coast
Hi from Texas!
Amazing math in this week broadcast
Loved the Wild West theme!
Hello! From Kinzley in Texas.
Here from Egypt
Hi from Texas
this is my favorite episode of science live! 😀
I can’t with these mathematical cowboys 😂🤣😭
THIS WAS AWESOME
Hey, from Chicago
Amazing math in this weeks video
here from Missouri
I was not expecting R-51 to get a potentiometer, where would he have even found that?- XD
I love science live!
I like this science live alot so fun to watch
Here from NJ
Dr B and Ms Pajet Monet, I would like to know if making an eraser pen would be worth my science project. A eraser pen is a very special kind of eraser in a pen shape tube. This eraser can erase all things such as: Ink, led, marker, and other types of writing items
I have been on Acellus for over 4 years and my favorite part is Wednesday science live. Can you please answer my question on live for me please. Love Lynzie
Ps. Ms p is my favorite teacher and she has helped me through so much.
Ty so much for all the support
I love science live a lot!
the binary decade is cool
Hi from NJ!
Watching from GA
Science Live always has something new each week, which keeps things interesting!
Learning more about the decade counter was great and also how to build one and have it divide up to 9 was very interesting and informative! The proteges are so funny. Thank you for this live!
Love the electrical stuff. My dad has an electrician license.
I always learn something new.
Hi from Ct!
such an exciting episode can’t wait for episode 300!!!See you all next week
This science live was so good!!
Hi from Arkansas!!!
Here from Texas.
The human brain is amazing
This is so fun learning about binary decade counters
Thanks for putting this on I loved it.
hi from Virginia
hey from texas!
Hello from Texas as well👋👋
thank you for the lesson
Pajet looked really good in the cowboy hat, and I have to say all the country stuff was pretty funny.
hi from montana
R51 you have to use a division symbol
I liked the cowboy theam it was fun and creative and i like that blend alot!
hii from Florida!
Will R51 be teaching classes soon?
It was amazing Thanks for putting it on
The cowboys were so funny!
R51 is so funny.
if the cancer killing bacteria was created earlier techno blade would be alive
hello, from Decatur iL
funny live i enjoyed this!
Hello from SC- I love Science Live! The inventioneers tonight! Math Mountain is great! I look forward to Science Live every week!!
The stereo sound segment was very interesting.
I wanna know a lot more about diffrent conducters!
Happy science live. Have a good night everyone.
Hi from Mexico
Science is so cool!
Today went by very quickly.
I use potentiometers within my guitar builds.
hi from texas
From CHICAGO!!
I liked learning about the resistors and potentiometers.
AREA 51 WOO WE LOVE YOU
Hello from Tx
Thank you for another amazing science live!!!
Hello, from Illinois.
Way to go Kaleb and David!!
I love R51, He is so funny.
Thank you for this fun and educational video!!!
Hi from Illinois!
AHH, BIG R!
awesome stuff! can’t wait to learn more next week!
Awesome video!
this is so cool like pretty much make shift calculators but in different form
I like the guy in area 51 he is funny
It is awesome that gallium can make hydrogen. I didn’t know that was how stereo was made. I didn’t know the brain could unscramble images.