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 »
l loved this. I’m glad can learn more thing.
Hello from Texas!
Hello from Texas!
I just finished my 10th grade history course, I made a 98% acellus has helped so much!
Hi from Oklahoma!
This highly motivational and very informative, he draws from his diverse range of life experiences, inspiring students of all ages to love science and to understand the value of education in empowering their life missions!
if sounds is waves, how can it be heard from the other side just by waves, is the object shaking to the waves?
Science is so cool! Hello from Hawaii.
so glad I tuned in today, I love science live!
I hope everyone is having a great week! See y’all next Wednesday!
hi from FL, cool vid
I love watching these lives about science! here from Colorado
So cool to learn all this!
These lives are awesome!
hi from oklahoma
I always look forward to tuning in every week!
Thanks for the lesson.
this live was very fun and interesting.
Hey from Texas.
I love science live!
We love watching these each week!
I love science live!’
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watching from Washington. A marine bio class and a geology class would be cool fyi
Watching this from Georgia!
Hi from Brazil
Amazing live
science live is always so fun
Hi, Roger Billings, I’m learning the Go programming language. Do you have any good programming languages to write a compiler in other than Go?
Thank you for this science live.
Today’s video was very nice and educational i liked it.
Hi from NJ!
Science live taught me a lot today!
Those were sick model rockets
i did not know about binary decade counters but it was fun to learn about
Such a good live!!
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I love Acellus
Love all of this, keep it coming!!
Hello from Houston Texas
I love science live videos
I loved the video this week
hi science live
I always learn something new watching science live
Hey from tn.
This was so educational Bella from Texas !
I’m a cowgirl from Texas! Thank you for the very interesting class today!
Science is cool!
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here from GA
I love tuning into these lives.
Loved today’s science live!
I enjoyed the science live lesson today.
The cowboy scene was hilarious!!!
It’s crazy how many forms of bacteria there are
This was interesting!
I absolutely love this live! Looking forward to Wednesday yay
Science rocks!
its so cool how the spoon melts
Hey from SC
I loved the cowboy scene!!!
Hello from Texas! Love these science live videos!
Science is so fascinating
Hello from Michigan!
I love these science lives!!
Hi coming NJ so happy and excited too watch.
Hi, Science Live. Is there somewhere to learn how to do a science fair project?
How spectacular viewing all these awesome things in these Wednesday lives!
Hello from Tennessee!
I thought the binary decade counters were so cool to learn about, and the stereo segment sounds were also pretty interesting.
Hello from Texas! Love these science live videos!
”I am all alone, no one here besides me. but you gotta have friends” 🫏🛸💚💚 (from shrek)
I like that they always pick something new to have on science live
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I love watching these
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science is cool
Mia from Texas can’t believe bacteria is still being discovered
I love learning new things every time I watch Science Live.
I love to learn about science
these are so informative thank you
I really liked the Breakthroughs in Science part about how stereo audio was made. I also liked the Roger Billings section about rockets.
This is the best homeschool program!
Your right. I didn’t like my other schools until my mom signed me up for Acellus. I learn MORE and MORE every day!!!
I agree!!
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Learning about the sound system was really interesting! How do you even find all these cool inventions?
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i love watching the live every week im just late this week. Hi from ga
This science live was epic! I wonder what’s gonna happen on the 300th episode. Also please stock the LED fidget spinner thank you. Keep up the great work! -From PA.
the best science movie ever
This is my first time watching. Cool!
is there a limit of power that a potentiomeater can handle
Hi from East Texas
hi Sheldon from Las vegas
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heelo, kentucky
I love science live!
Nice to learn something new!
Great live! See you next Wednesday.
Science live rules!
Loved todays vid. Super educational
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Hello from SD!
I love science live!!!!!!!!!!!!!!!!!!!!!
Maddie from Texas interesting find a new bacteria
hi from Nebraska
Hi everyone, Anna Akhverdiyeva here from Brooklyn, New York, USA.
Dr. John that was so interesting about the gallium spoon. What are some more interesting facts and abilities of the gallium metal?
With our ever improving technology and innovation, will there ever become a time in the future where humans could visit a planet as far as Neptune?
hi from ri
Hi from Nevada!
a million transmitters is a lot
I loved the area 51 segment, it was very interesting!!
How long would it take to finally reach the biggest number ever, or even count past infinity?
Beautiful Live, relaxing for me after work.
The Science Live was very exciting and informative. I look forward to watching them on a weekly basis.
I thought the experiment with the gallium melting in the water was cool. I wanted to know what else gallium can be used for and can this be useful in the medical field? I thought that the invention Alan Blumlein created is amazing and it is cool that this technology is still being used today. I can’t imagine a movie theater not having stereo. Watching movies at the movie theater or even at home without Blumlein’s invention would be so boring and the music industry would not be advanced as it is today without this technology.
I like science live!!
Radios are so cool
I can’t imagine how listening to stuff would feel like if stereo wasn’t invented and we still had to use mono audio.
this was the best one yet!
hey from TX
I find it interesting how they were able to use stereo sound, which is made by controlling the volume on the speakers to make it seem closer or further. It’s also clever how they used it for symphonies, so that for the listeners, it would sound as if they were actually in front of the performance.
science live is my favorite
Hi from Texas!! 🙂
I love science live. Thank you.
keep up the great work!
Hi From Florida!
Can’t wait to figure out how to put those components to use. Thanks for another fantastic Science Live!
I enjoyed watching!
Great ScienceLive, Thank you for this 🙂
Hi from NM!
all for science live!!!
Love the video, very interesting
The cowboys were hilarious!
Great episode as always!!!
enjoyed every second
Todays science live made me laugh a lot!
watching from ohio
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watching from nc
Loved today’s episode.
Hi from NY!
Learning about the new bacteria for cancer was cool, but my immediate thoughts went to what’s the side effects!! Very useful tool though, hoping for minimal side effects with it.
Another great live!
hi i am from Arkansas.
is it just me or does R-51 look like Roger Billings?
The Proteges, David, and Caleb did really good this episode, thanks for teaching about how to make IC counter circuit that can divide by three.
Gallium looks cool to play with and also it’s cool that it melts when it’s warmer than room temperature. (:
It was really interesting how the proteges use the divider to divide. I would like to learn everything about the Divider circuit.
I really enjoyed seeing the different rockets. I also liked watching the integrated circuits.
How does the gallium method of obtaining hydrogen compare to other hydrogen obtaining methods with the expensive catalysts. Is it cheaper and more efficient, or does the alternative methods beat this new method?
I really enjoyed the protégés and ventioneres clash in the video. It was really funny.
love the Wild West
I’m new and this is my first science live but I learned a lot about IC’s and I never knew that you could use them to solve division equations.
Thank you science live for telling us about todays stuff! My favorite thing is space, Nasa telling us stuff right now and or in the future. Thank you acellus!
The resistors topic was really fascinating, Humans have made so many things like it that we rarely think about these days.
Dr Roger Billings-“well he always hallucinates” 😂 hahaha
It is so amazing how a spoon can melt in water.
AMAZING LIVE CAN’T WAIT FOR NEXT WEDNESDAY!
I like The Good the Bad and the Ugly music!
I find it confounding that something as simple as a calculator can be so complicated, I hope to meet you someday Dr. Billings
I enjoyed the wild west skit, it made learning about circuits fun, and the accents were funny too.
R-51 should stick around a little longer sometimes! Thank you for another awesome Science Live!
Space X rockets are so cool and R51 is so funny!
Comment I like learning about the audio in the 1930’s
Thank you!! I enjoyed the Live and of course, R51
Nice live! Learning really is important, and math is useful in many things.
I love area 51! he is so funny!
Could the thrusters on a rocket be condensed to a smaller size?
How many electrical components are in a circuit board?
I love science live!!!
Hey from California!!! The protégés and inventioners are really fun. Thanks!
I could imagine how did the people felt when seeing the movie from walt disney
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I love my record player! Thank you for tonight’s stream! It was great!
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loved the live, only 1 more till the 300th one!
I love learning new things each week!
I hope the new cancer treatment will help many people with cancer.
Hello from WV! Actually, movies can be very informative, depending on what movie you choose! Sorry for the lack of questions and comments, but I just didn’t have anything to add to the conversation for any of the topics in today’s meeting, but nonetheless this meeting was still very fun! Good Science Live, see you next week!
Hi from Florida!
Do you think that cancer can be more locally dispelled of in the future?
Hi from SC
I loved this science Live! Loved listening to R51😂
R 51is so funny.
The scanner was so cool!
hello from AL
That metal is so cool.
very interesting I was focused the whole time.. can’t wait for more!!!
Hello from Tennessee😁
Great Live today! I can’t wait for next Wednesday. Hello from Minnesota!
We love the proteges!
Heyy from VA
science is so advanced that you can connect nerves its so incredibly fascinating. Thank you for another great science live!
I loved the prodigy’s part today! I hope they do something similar next week!
Amazing video this week guys! I look forward to these so much. See y’all next week!
science live was so fun
Gallium is a very cool metal.
I hope to see more Science Live lessons about the breadboards and circuits!