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 »
Wow so cool I love cowboys
Hello science live from Guanajuato, Mexico. Around how many different functions do the brain have? What do we do daily that we never even notice.
tuning in from Nevada.
Such a cool lesson thank you!
hi from Texas
The Science Lives are entertaining whilst remaining informative, and it’s amazing to me. They’re fun to watch.
Loved the lesson thank you!
Music is much better in stereo. The brain is amazing how it was able to unscramble the images from the optic nerve. Good Science Live!
hello greetings from chicago
This video was very interesting and I can’t wait to learn more science!
Watching from Texas
Wow r51’s scanner is soo cool
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I want to watch them try to divide by zero on that little calculator .-.
The Proteges are so creative with the way they teach!
Fantasia is awesome! Its cool that Disney was the first
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Science is my favorite now
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Watching from Texas.
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I love how the Proteges appeal to a younger audience, I love their creativity
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love DrB
This is my first week. Im not a fan of science, so I hope these lives are more than just science.
love science live and R51
Hi from Alaska!!
This was very interesting episode on binary decade counters and I really enjoyed learning about it.
The rockets are cool. My cousin is going to start working with Space X on Starlink projects soon.
I loved this science live!
Thomas Edison said “when you feel like you can’t move forward you can”
here from lake charles
That was great thank you for another science live see you next week😀😀😀😀😀
Is gallium used in any everyday products? I think it would be funny to pull pranks on someone much like the melting spoon!
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I loved learning about all these new things!
Is there a name for the bacteria that is being developed to fight cancer cells?
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The cowboy scene was hilarious!!!
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A cool way to cure canser
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Great video Dr. B
I’ve only done the science fair once, but it was really fun! I still remember it. I really hope that cancer treatment can work and become mainstream!
Gallium Sounds very fun and useful!
hay ya’ll hope ya’ll are having a great day. hi from Montana
Science live is so different every week I love it!!!
I think it’s cool how they turned gallium into hydrogen.
I loved learning about this!
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Watching from California! These lives are so much fun <3
Hi! From California!!
I liked learning about the education path ways. This makes it so much easier to track!
This was a great live like always! keep it up!
It was cool to see him draw from his diverse range of life experiences and the way he inspires students.
hi from tx
We love science ! Best part of wednesdays!
hi from Vegas Nevada
How long did it take for people to make the internet
Who made the new cancer treatment and how do they know it’s safe
Watching from Texas! Is there going to be a special live for episode 300?
The stereo segment sounds were super interesting…also the cowboys were so funny!
Hi from Kentucky…
Great Science Live! Learning new things every Wednesday.
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Enjoyed from Virginia
i love science live, it teaches me so much ! here from nevada
these science lives teach me a lot of stuff
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Science live has taught me so much!
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I have always enjoyed science
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Science is so awesome!
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Science live teaches me a lot
Watching from North Carolina!
I loved this live. Super entertaining!
Mr. Roger Billings, where is the Acellus Learning Graduation center/place???
hi from oregon
I Loved the Science Live! It was very interesting.
Alyssa here from Texas!
A new cancer treatment would be awesome!
Natalie- i enjoyed this live am looking forward to the next!
Hi from Tennessee!
Hi from Chicago!
love these lives ! here from maryland ! 🙂
Hi from Mississippi!
Loved everything ❤️
the cowboy scene was so great!
Wonderful live as always. Looking forward to seeing the next one.
Watching with my sisters
watching from wisconsin
Hello from Maryland 1 questions I have is, How does the distance between my speakers relative to my seating position affect the stereo image?
Cancer eating bacteria is an interesting idea.
I love these so much
Hello from Texas! I enjoyed this live.
So excited for the next one!
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Thank you for the great video.
Another Wednesday, another episode! Watching from Virginia ❤️
learned a lot thank you for today’s science live
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I liked the part about stereo sound.
love these! hi from vegas
I have learned so much from the science lives, and I do enjoy it
I love these lives! I always learn so much. the cowboy scene was incredible!
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im from kentucky!!!
I love these lives! Tuning in from Maryland
Hi from ny
wow this was so cool to learn about!
THANK YOUI love these videos
i have always thought that gallium was very interesting i always had wanted to use it since i learned about it.
hello from Tampa
Coming from Wyoming the cowboy scene was great!
watched from sc
today’s live was amazing! Hi from Texas!
I like acellus
I love these lives.
Another amazing science live that helps me learn so much!
Hello from Florida!
Hey from florida!
Science is cool 😎
I loved the video thanks 😀
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honestly I love this so much I always watch it no matter what!
I think the bacteria that basically cure cancer is really cool
Hey from West Virginia, loved today’s episode!
North Carolina here! Always inspiring and helpful!
this is one of the science lives that was interesting to me
i love learning from these!! they are so cool
I think the bacteria that basicly cure cancer is really cool
Science is my favorite subject, it’s so fun to learn about!
Hello from Virginia!
i love science live!!!!
Watching from NJ, cool vid 🙂
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I love science live so much.
Hi! From SD!!
loved the cowboy scene!
I love traveling. I live in Mississippi and I am in Seattle right now.
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amazing live! thank you Mr billings ☺️
hi from geogia
if sounds is waves, how can it be heard from the other side just by waves, is the object shaking to the waves.
The fact that gallium can produce hydrogen is a very interesting fact.