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 »
Are we still using the same system for audio today?
R51 is funny!
It’s so fascinating to me how we can use simple IC’s to make arithmetic solving machines. It makes me appreciate, even more, calculators, binary, and helps me to have a better understanding. Thanks proteges.
I hope to see that the bacteria for the cancer is successful and we can hopefully get closer to curing cancer
How small can they make computer.
This science live was great I loved it.
This was a great video and very informative!
I liked the cowboy scene.
wow, this one was really fun!
I loved the gallium idea thanks for another week of science live
Did you know elon musk shot a rocket last night
What happens to IC divided by 3 if IC doubles?
If IC=27, what is IC divided by 3?
Again! Such a useful and great science video!
The history of Mono and Stereo is pretty cool. Also the gallium plan is really neat!
Loved the protégé in thisnone!
i loved this science live.
Science live help me have a lot of knowledge. Thank you!!!
Whats the science behind why on one side of the country its already in the 90’s and on the other it’s still snowing?
I did an experiment with gallium super cool! Science Live is the best!!!
I love learning new things in science each week!!
I really enjoyed the Inventioneers performance and I think adding a female Inventioneer is really cool too!
Once again, something I never knew about that I learned through this program, Acellus is great!
Acellus has made learning so efficient!
I love R51!
That was a great quote from Thomas Edison!
Great episode! I’m still wondering about project deep hole 🙂
why the small rocket is heavier than the big one.
Hi I really liked this science live. I also have a question, is it true the more wrinkles you have in your brain the smarter you are?
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the brain is such a cool and awesome organ that controls the whole body.
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It was so cool how just one movie experience can turn into a great invention!
Gallium is such an interesting element. It looks so much like mercury.
I wonder how much production for this show costs?
This episode is so amazing!
I enjoyed the cowboy theme. It was fun learning about circuits
Integrated circuit to divide by 3 is cool
Liked the cowboy scene!
I love the gallium idea a lot!!
i love how the useless piece of metal turned into a hydrogen source!
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Hello from NY.
I enjoyed learning about Alan Blumein. Columbia SC
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hi from Texas.
I think science live is unique in its own way
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Very cool, I wish I could watch this in person!! Thank you 🙂
Are there any gallium experiments we can do at home?
Gallium looks so cool, it would be interesting to see what we can do with it!
Watching from Illinois!!
Hi from NY!
I wish I had a potential meter!! 😃
Hello from Miami, FL
Acellus teaches me something new everyday.
Thank you for taking the time in producing this scince show – very cool!!!!
thank you for your time, This was fun! Turning basically useless metal into a hydrogen source is really sick!
I hope the cancer cure will work.
The graduation plan makes doing school very reassuring!
Hello from South Dakota !!! love science
What a great segment from the two cowboys
Hi from Germany!!
Dear Dr Billings, I liked everything in today’s Science Live. I liked your blue and red suit.
Thank you Science Live!
Thank you so much for this week’s video I really enjoyed it and I enjoyed learning about circuits I can’t wait to see what is next
Thank you so much for this week’s video I really enjoyed it and R51 was really funny and I enjoyed learning about circuits
I loved the cowboys.
It’s cool that scientists made a better treatment for cancer that will be used somewhat soon
I loved the gallium idea!
Wow! These episodes are so entertaining.
When are we gonna find the real cure to cancer????
I love science live!!
What is the smallest rocket space X have created?
It’s fascinating to see how a complex operation like division can be handled by a dedicated integrated circuit.
Great video! The way you broke down the logic for the divide-by-3 circuit was incredibly clear.
I love the science live videos I have learned so much already
Dear Dr Billings. I loved this week’s Science Live because it was fascinating to learn about sound and rockets.
I love watching these videos, they are so informative!
i love science live it teach me new things!
Love from South Dakota! Appreciate the videos as always!
hi from louisiana
This episode helped me gain more understanding of the various integrated circuits and their different roles, and also exactly how the circuit the Proteges built works; and I find these simple circuits very interesting.
Gallium looks like a very fun metal to play with.
This Science Live was awesome! I loved the part about Gallium!
Todays Science Live was interesting.
I’ve been wondering since last week how they would divide by a number other than 2 and 4, this explains a lot
R51 is the best!!!!
Love science Live!!!
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I have watched a rocket launch in Florida.
The brain is so complex and so amazing to me. Watching from South Carolina
I always look forward to watching Caleb and David there so funny.
I look forward to watching science live all the time!
Science Live is my favorite part of Acellus!
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The gallium idea is so interesting!!!!
This video is so eye opening and intriguing I love my so much for signing me up for accelus
Hello from Kansas. First time posting
Wonderful Science Live!
the gallium spoon was cool
this science live was awesome cant wait for the next one !
Science live was very interesting.
I had been looking forward to this lesson, and I love learning from Acellus. It makes me feel confident and strong.
I was really intrigued by the metal that you can melt in you hands by rubbing it against your hand it’s weird that a metal melts just above room temperature!
Science Live is the best and has taught me so much!!
Another great Science Live!
My favorite episode so far!
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Comment I love the parts where how to study with Acellus gold and dr. Roger Billings comes in. For all the students out there I think you should keep watching science live and good luck on your science fair projects.❤️☺️
This is so interesting thank you for all of the knowledge!!!
I love the lesson about Mr. Alan Blumlein!
Where do they find gallium
I like the gallium idea.
love science live!
This was an awesome Science Live!!
This was an awesome video. From Virginia
thank you for another great video!
Better way to record and play sound.
Hello from CT! Thank you for the science live!
🤩🤩🤩
How many students get into ivy league colleges after graduating Acellus?
I wonder what the scanner would say if it scanned me.
I love science its so cool
Now it makes sense how they have melting spoons in the movies.
Science is a great subject to learn
Love getting to learn more every live! the fact about gallium is very impressive.
I love science live
Thank you for the class, that’s interesting about how we can tell direction from our ears. I never really noticed or thought about it until now.
I learned from the gallium idea. It’s very smart and thought out.
Gallium was great idea
Seeing a gallium spoon melt makes me wish I could morph, too.
I really enjoyed this video
Always looking forward to these
The brain is so cool! I’ve learned so much from this science live!
learn something very cool every week
Love these lives day 6 of watching❤️
Great jobs guys so entertaining!!!
I heard gallium and was immediately transported back to my childhood. Some youtubers I used to watch would make things out of gallium like spoons like we saw, combs, forks and even swords. So cool to see!!!
Science Live!!!!! From GA
science live is always so interesting
Love theses videos I do the science project for them so cool.
It is cool to how you can make a calculator in the Wild West
I am glad he invited the stereo system Tania’s is the best
Hello I really enjoyed these science videos.
I like how they did the math.
Love the western segment
this would look so cool in person!
This episode was so good, I learned so much!
Thanks for sharing the videos every week
love science live, favorite part of my week!!
Love Everything about this.
Hi form North Carolina!
I would love to go see SpaceX Starship in person.
Hi from Japan!
I didn’t know what a resister was used for, so this video helped me. I also liked learning about sounds and how our ears work.
The brain is really cool and learning about how metal could melt in your hands
I didn’t know anything about Gallium until now, but watching this has made me very interested!
Gallium is very interesting
I always look forward to hearing what Tobias has to share!
This weeks science live is super interesting, really love learning science.
Loved it,the parts of the end always make me laugh!! cannot wait for next week episode!!
great episode! and thanks Alan B!!
Hello, from New York!
I loved the gallium idea! An almost useless metal turned into a hydrogen source?! Impressive.
This was an amazing video.
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R51 is so funny 😂
I thought that gallium part was interesting.
It was very interesting .The video is very clever and interesting.