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 »
I really enjoy when the protégés explain things.
Hi in texas
interesting how circuit board works
Hi from North Carolina!
I enjoyed watching this Science live class. It was very entertaining and informative .
Hello from Hawai’i ! I love your lives its so inspirational!!
The calculator section caught my attention because I never knew how much they really had in them.
hello from savannah
My favorite was the rockets that was very cool.
I enjoyed the division cowboys. I did not have the capacity to resist.
I can’t stop laughing about the Cowboys🤣
When is the aviation course coming out
I enjoyed learning about audio and mono types of sound!
“yee haww”
Its time for a ho down
I live in Texas, I love the science lives and learning about new things every night!
hi from dc
r51!!!!!
I really like Science Live it is very cool!
It’s pretty neat how you are able to divert sound into two different speakers.
One thing can we see R-51
hiii!!! i loveeeee learning about rockets!!!
Hi from New Jersey I was wondering how long it took the scientists to first pick out the design for the rocketship
One thing I’ve never understood about integrated circuits is how people can understand what they can do just by looking at the outside of one.
Decibles multiply by ten for each next one. I think at least.
Hi! I was wondering what your favorite invention is Dr.R?
the human body is amazing
I loved that video
Very interesting Thank you!
Hello from Illinois! I’m glad to be at this science live and the great thing is… that NEXT week is the 300th day of SCIENCE LIVE!! My favorite part was the fighting of division and the thing
I liked how they were talking about the circuits and when they were running from the division. This was an amazing video, my favorite was the rocket ship it was pretty cool.
Hello from mn
Hello from texas
Where is r 51
The Proteges are awesome!
is it true there was different versions to play music and how?
It is cool how our ears work to adapt to different noises.
Coding and math are one in the same, and I think that’s really cool.
Here from Egypt
Hi from Indiana!
I love math!
first, sometimes I wonder why we need all of the math that we take.But now I understand it. You can use it in almost everything you do.
How long does it take the liquid metal to melt in your hand?
i liked learning about sound.
this is so cool
this was a very funny live
good video this week
I love this live
Very good episode of science live. Thank you. Enjoyed it as usual
The device is super cool , great video!
Hello from Virginia
What is the difference between a resisters and flip flops?
Austin From Las Vegas is here!
Love it! Very great episode!
Math isn’t usually my strong suit, but I still learned a lot from this week’s live. Thank you!
That was a really fun segment.
Loved the Western theme. Lots of fun!!
this sicence live was verry intresting to me.
Hello From Kentucky
Wow! Great live today!!
I liked the duel!
I LOVE R51!!!
how did R51 do that
The protogese are funny!
I really enjoy watching Caleb and David while learning. Very engaging .
This was very interesting
They all look like they had a lot of fun getting to go out there and film something so funny and educational like that.
Will you give the protege’s course?
The cowboy video was very fun to watch!
Hi! I love western things that was extremely funny :]
Enjoyed the part from the proteges today!!
Hi from IA!
I need a meteorology course
hello from Oregon.
What if we didn’t have arithmetic
The Protégés are so funny! This is the highlight of my week.
wow this is great I am glad that we have a team that helps us with science!
I really appreciated the mono and stereo bit
Is it alright for a model roller coaster to be submitted into the Acellus science fair?
The secret weapon was crazy
This live was very cool!
It’s really interesting how controlling the volume of the speakers can make the audience decipher the side or if what their listening is moving.
Who first made integrated circuits and what year were they produced?
Hello form maine
I love science. It’s the best and it’s so educational! 😀
it was fun learning about potentimeter and 10 position switches
Hello from Florida
That was so funny !!!
I loved the video!
Hello, California here
Rockin’ the hat Ms. Monet!
r51 you guys forgot times almost up
love her cowboy hat
Great Live tonight.
Wonderful Science Live!!!
I liked the circuit boards.
I loved the western accents haha
I didn’t realize how much smaller modern rockets are compared to the ones from the Apollo era! The comparison of the Saturn V was fascinating.
Hilarious guys!
I think its crazy someone would even try to make a spoon out of that metal 😂
This was a cool science live this week.
They look like they have so much fun filming!
Really interesting to watch, love watching these every week.
I loved the wild west bit!
Hello from Alabama.
THIS IS THE BEST EVER
This lesson was so funny!
I love the protoģe s they are hilarious 🤣
I really enjoyed it this week. I cant wait for next weeks
This was my favorite science live so far!
I enjoyed watching! That is a neat way to divide.
Yee Haw
I love the Proteges, there funny and so beutiful 🤩
Good episode! Watching from Florida!
hello from TN
Hello from Texas.
I love a good western.
I learned a lot of from todays science live.
circut boards are amazing
this is my favorite episode
i love acellus live
I love acellus!!
Hi, from Massachusetts!
Hello from Michigan.
I really enjoyed this Science live because I always learn something new.
I loved the segment with the cowboys and the divider circuit. It was fun to watch cowboys explain how things work. It is different and it was a great way to learn! It was unique, interesting, entertaining, and very informational!
Hii from California, loved the western show haha!
I like watching Area 51 in science live and learning new things
Loving the protege antics!
Watching this live makes it easier to understand how the IC actually behaves.
Were those coconuts for horses?? Was that a Monty python reference???
Science live is the best Wednesday is the best day
What does it take to be an inventioneer?
I love cowboys. I want to b one when I grow up.
This live was hilarious! I love sciencelives!!
Math duels are so fun to watch!!
Greetings from West Virginia
Having Caleb and David is the best thing Acellus could’ve done, hilarious!
wild west math is my favorite
Interesting stuff this episode!
This video was very interesting.
Cool live great job!
Finally Wednesday!
Hello from Texas! See you next week
Hello from Costa Rica I love that you support people to graduate at their own time so they can learn at their own pace.
i like how they are doing math like this
Thanks for this live very interesting stuff to learn!
I love cow-boys!
Thank you for this weeks video
This one was definitely awesome
We really enjoy science live every week.
Thank you for the video!
Can we do math more often during science live
I really love these lives y’all are so fun and funny
Cool science live this week
I think it’s cool that they could split sound between two speakers.
Hi from MS
The cowboy scene was so funny!
this was a very cool and good learning experience about new technology
I liked the acting of the cowboys haha
They are so funny!
thanks for giving me more options for school and more opportunities
Hi, from Brasil.
Nice live
hello from wild, wonderful West Virginia
This is cool! My dad has an electrician license.
Ive learned alot from this.
The epic mathematical battle 😂
i love this part its great with the cowboy stuff
I CAN’T IT’S TOO GOOD-
Amazing live!! See you all next week!!!
Science rocks!
r51 is funny love him
I am extremely grateful for our current rocket technology. However, in the future, I wonder if we will advance technology to transport citizens to space with ease?
i love these lives, they’re so interesting and fun to watch!
I liked seeing the space ship statue.
could multiple flip flops go at the same time
Wow this is very interesting! I loved watching this live. The galium and hydogyn was quite interesting. (Did I spell it right?)