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 »
This was so cool!! the brain is amazing!
Happy March everyone! Can’t wait for the blood moon and lunar eclipse!
I like the part about the melting metal.
I had never known that about sound
Hey from WA!
I liked the explanation with the water bucket
Love the rocket models!
this was a really cool episode
Somehow, I had no idea Gallium existed, what an interesting metal! hopefully we can use this in the future for more sustaiable energy.
That’s what’s very cool about gallium how it can make hydrogen.I have never heard of Potentialominus thank you for doing this video every week I really love it. And go girl because I am a girl and that was awesome
I really enjoyed learning from this weeks video and I can’t wait to see what’s in the next.
I did not know that about gallium.That’s really cool that I can make hydrogen. The brain is really amazingI had never heard of a potentiometer. Thank you for everything and for making videos every week for me to watch I love it.
Is all sound stereo now?
Love from Idaho
The brain is so interesting.
The melting Gallium spoon was cool!
I love music so learning about stereo’s past and the new breakthrough was very interesting.
Eye nerves are amazing!
A potential-o-meter is one of the many cool inventions R51 has come up with !
hi from California
Thank god cancer is getting deleted, that disease caused many people to die.
I love R51
It was very entertaining to watch for my first time.
love watching these videos 😎
How fun to see a girl part of the inventioneers now !
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i love area 51
I love this! Thank you (:
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Hi from rhode island!
It’s interesting how sound recording got its start.
Thank you cowboys
I hope to see a world without cancer deaths.
Had fun watching this video!!
I liked the western scene
First time at Science Live! 🙂
Stand up to cancer!!!!
Watching from Michigan! Love the video!
Hi from Kansas
so cool! i like how she had the cowboy hat im learning so much!
The brain is so amazing!
I had a great time watching the wild west scene!
Thank you for helping me with my graduation plans.
the human brain is amazing at what it can do
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The brain can truly be so deeply complex yet so simple in short words, but it could never fail to amaze me how much it can work in so many different levels and ways!
I like Dusty Dave and Crusty Cal
The brain is so cool
Thanks for this Science Live video!
Loved this live so much! Can’t wait for next week
Wow, the stereo segment was really interesting. I also really enjoyed learning about circuit boards with the cowboys. I learned that the knob scales exponentially.
Hey from Virginia loved the video
R51 is so cool
I loved all of the electrical components and the circuits
I love this one and hope to see more with experiments. My whole family gets on and watches this together.
I love the graduation plan because I can clearly see my progress towards graduation!
I liked the hydrogen discussion
Movie theater sound sure has come a long way since back than, I recently saw a movie with Dolby surround sound an it sounded incredible.
really love watching these videos
i hate the big c. i hope we find the cure some day
Can’t wait untill the next episode!!!
This is cool. I really enjoy learning new things each week.
The gallium was interesting.
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We love science live!
the brain is so cool to learn about.
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I will never get tired of watching these.
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I liked hearing about the new bacteria
Thank you for the video made by the Protégés & the Inventioneers. Their video makes it easier to understand the topic each week like the IC division tonight.
I would like to learn more about decade calendars. Thank You!
Whoaaa, they tried to down the servers? I didn’t know people were so committed to sabotaging you guys! That’s terrible! Acellus better stay up, this is what’s keeping me and my siblings out of public school.
Science live is so great and amazing to watch!
I love science live
Learning about the brain was fun!
I am happy there are more treatments for cancer to help people and can even help my friend. I am getting a periodic table this week and excited to learn more.
I’ve wanted to be a veternarian since I was three.
thank yall my favorite part was David and Caleb
The gallium spoon demonstration was really cool!
I am glad there is more treatments for cancer. I makes me happy to be able to help people with cancer even my friend.
never would have thought stereo sound came from someone watching a movie
Learning about how the stereo works was so fun, it’s such an interesting topic!
My favorite part was when the cowboys did math!!
checking in from Texas
It’s fascinating how bacteria which we usually associate with disease are actually being studied as potential cancer treatments.
Loved this video!!! :]
It’s fascinating how bacteria which we usually associate with disease are actually being studied as potential cancer treatments.
Cancer is really scary. I am excited to see if the cancer eating bacteria works. It’s so cool.
the brain does so much! I’m always blown away by it!
This was an amazing video my favorite part of the video was learning about the brain its amazing how it works!!
The human brain is very interesting to learn about.
The eye story was my favorite highlight of the show!
I didn’t know that spoons were made out of galluim! Very interesting video!
The calculator thing was very interesting!
I Love Science live
I loved the joke about don’t let division divide us lol
these are always fun to watch
Great ScienceLive this week – our brains are amazing!
Hello from Colorado!
I really liked the gallium spoon idea. It’s so innovative, and you can use it again and again!
I loved the division skit made by the class, hilarious!
When the 555 gets too much power, it releases power.
the fact that they made math fun is crazy we need more lives like this one.
The decade counter was very cool
I’m loving School!
I enjoyed this program
The calculator thing was really interesting!
I heard Japan has hydrogen run trains now. Did you have anything to do with it?
This was an awesome episode and I thoroughly enjoyed the learning experience!!!
it’s cool that a Disney movie was in stereo first .
I learned a lot of interesting facts from this video!
yes i want spacificly you R 51 to be scanned and turned into a princess just like lady pajet.
Had fun watching this video!!
This was interesting.
LOVED THE VIDEO
This was cool to watch
The brain is amazing
The stereo portion was so interesting. I never knew that and now I want to learn even more about it. I love music and movies and I want to hear how they sound in mono and then stereo
Will this work for all cancers or only certain types? cancer is scary!
i love science so much!!!!!!!!!!!!!!!!!!!!!!!!!!
R51 is so cool and funny to me and my sisters
Wow! Thats wild about the eye story.
Loved watching this !
The idea to make stereo audio is amazing
Hey from West Virginia! Love science live so much!
Hi from Texas
I love learning about the brain!
Thank you for doing science live every week! I’ve learned so many really interesting and cool things from these videos!
Thank you for doing science live every week! I’ve learned so many things from these videos!
Loved the cowboy hats
I love watching science live every week! The gallium spoon was so amazing!
SCIENCE LIVE IS GREATT!!!! AND THE CANCER CELLS ARE SUPER INTERESTING
We were designed pretty incredible!
Checking in from Virginia! Thanks for the info, ScienceLive!
I liked listening to Dr John talk about gallium.
Hello from Morocco! Enjoyed learning so many fun facts!
Science Live is the greatest of all time! Hopefully they have plans for the 300th episode.
The Gallium?! Amazing!!
I love science!!!
Wow. I had no idea R-51 had it in him.
science live is so amazing!
the brain is truly amazing. Love the rocket models!!!
The brain is so interesting!
I love science live! the brain is so amazing to learn about !
”Crusty Cal”.
love the technology portion of science live the most! always something new i’ve never heard before.
Science live is the best! Thanks for the refresher on gallium!
Thankful that he shared about college and credits and steps. I’ve been looking for how to get credits and how to show it.
i love science live
Hi from GA
R-51 is so funny 😀
The Protégés are my favorite part of science live🤌
Watching from Acworth, GA!! Great live!!
love this so much!!!!!!!!!
r51 is the best
Gallium is probably my favorite metal! I love how it can melt in your hand and when it melts, it kind of looks like the T1000 in Terminator 2!
Science live is amazing!
Probably my favorite episode yet I really hope that there’s more episodes with experiments and robots
This is SO cool.
i loved Tobias’s segment
I liked the stuff about the movie theater noise!!!
Science Live has taught me so many interesting things and I love how Acellus helps us be able to make out our courses for college.
I love science lives
Hey from VA!
what would it really look like if the brain didnt fix the images you see
I had no idea that stereo sound was invented back in the thirties. That is neat!
This was a great episode!
excited to be part of Acelllus!
That new cancer eating bacteria sounds really interesting!
I love the proteges they are the best they always get me to laugh
Bacteria that eats cancer, incredible
It is really cool how Alan Blumlein invented stereo sound and got it to work on the record player without two needles
Math in the old west was funny and I learned a lot.
My favorite segment by far is breakthrough moment in science! I learn something so interesting every week!
Very interesting live this week!
Love the new skits yall have been doing
When I was watching the video, I learned that Alan Blumlein created the stereo in 1931. I thought that was incredible that it is possible to make hydrogen by using gallium.
These videos are awesome
Writing down my goals!
I love science live so much. Also, where can I get one of those cool spoons!!!❤️
Really cool to learn about gallium!
Really cool to learn about the brain!
It’s interesting how you can use hydrogen in so many ways!