IC – Divide by 3

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 »

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3,063 Comments

  1. Alice

    Omg the gallium is so cool! I love Science Live! This is the best one yet!

    Reply
  2. Serenity

    this is really neat. I love these videos. 👍

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  3. Emily

    I love learning more about science everyday!

    Reply
  4. Elianarosepilafas

    I really enjoyed this epesoed.

    Reply
  5. Ethan

    I wonder if Gallium can melt in any other liquid other than water?

    Reply
  6. Liam

    I am so amazed with how much you can learn from this. Thank you Science Live!!!

    Reply
  7. Emma

    Learning about gallium was really interesting! I didn’t know that a metal could be turned into hydrogen.

    Reply
  8. Jasmine

    I live in NE . I went to Kansas City for Worlds of Fun and on the way back in the dark I saw the Acellus building!

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  9. Ava

    Science live is my favorite!!!

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  10. Kaysen

    Much love from Texas!

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  11. Mia

    The proteges make understanding complicatted science easier.

    Reply
  12. Henry

    I really like the proteges they are so funny!

    Reply
  13. Jaxon

    I did not know that you could use Gallium to make Hydrogen, that is so cool.

    Reply
  14. Kingston

    Science Live is awesome!

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  15. Jozlyn

    Watching from Indiana, I think science lives are very interesting.

    Reply
  16. Mason

    I can see what Dr. Joshua is getting at. If you never set goals once you’re starting out as an adult, you won’t really get anywhere in life. I knew that setting goals and holding yourself accountable was something you should do no matter how old or young you are, but I never thought of it that way. I’m honestly kind of moved by that once sentence!

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  17. Ashley

    science live is sooo funny!!

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  18. Solomon

    Science live is always the best!!!!!!

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  19. Frederic

    I thought the stuff about gallium was interesting about turning it into a hydrogen source.

    Reply
  20. Kilah

    It’s cool that someone thought of using 2 speakers for movies.

    Reply
  21. Michael

    this video is very well put together! I also loved the gallium!

    Reply
  22. Judd

    Since you were shortly on the topic of rockets, how do you think the technology in rockets will progress within the next 10 years?

    Reply
  23. Ahlia

    Coming from Texas! Love the Acellus program. Have a wonderful day !!!!!!

    Reply
  24. Daygun

    what i learned today was the 10 position switch that’s what i call it because if you turn the switch to the line that’s were the electricity will go.

    Reply
  25. Edward

    It was funny how r 51 made the potential meter!

    Reply
  26. Ava-rose

    I LOVE SCIENCE LIVE!!!!!!!!!!!!!!!!!

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  27. Martin

    Hello from Virginia! I always enjoy learning new things and seeing all the science ideas.

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  28. Violet

    I love how the proteges and inventioners know how to make learning so much fun, and they do it in a way that is fun and easy to learn and it sticks with you!

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  29. Joseph

    I loved hearing about new cancer treatment options in the works as well as the graduation plan that’s available in Acellus.

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  30. Drew

    I’m excited to go to Acellus World!

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  31. Broderick

    I really like watching the proteges.

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  32. Anneson

    Every time i watch science live i feel smarter than i was before.

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  33. Haidyn

    Hey everyone!! Have a good weekend. Enjoyed the video

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  34. Emma

    Hello from Virginia! I always enjoy the video.

    Reply
  35. Noah

    Loved this episode, Thanks Dr. Billings!!!

    Reply
  36. Isaac

    When is the best time to start your college plan or tech school plan? I want to go into construction.

    Reply
  37. Waylon

    The Gallium thing could surely be one of the next big steps in the adoption of hydrogen energy, converting a metal into fuel could be quite useful.

    Reply
  38. Lexi

    i love acellus

    Reply
  39. Peyton

    It was really cool learning about the potentiometer and how it changes the amount of electricity that can flow.

    Reply
  40. Skyler

    I love science lives I wish I could see this in person.

    Reply
  41. Edison

    I like division and math so this was fun

    Reply
  42. Samuel

    when sound was made who was the first person to discover sound

    Reply
  43. Mack

    Science live is the best!!!!!!!!!

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  44. Mya

    David and Caleb are the best!

    Reply
  45. Isabel

    Loved the protoges!

    Reply
  46. Kirra

    hello from Texas!! This is such a interesting topic is there a chance we could circle back!

    Reply
  47. Joshua

    It’s amazing how organized and helpful Acellus is, even going into colleges/universities!!

    Reply
  48. Riley

    I loved the western act and the division.

    Reply
  49. Emma

    how does gallium work. that gallium looks fun to play with.

    Reply
  50. Tessa

    I loved watching the math fight with the southern accents and everything. It was interesting to see.

    Reply
  51. Luke

    Science is always fun to learn, I love all the videos!

    Reply
  52. Joie

    Best science live yet!

    Reply
  53. Daniel

    From GA this is my favorite part of the week

    Reply
  54. Henry

    All of these episodes are very fun to watch, and I learn something new every time. I love Science Live!

    Reply
  55. Rosemarie

    Watching from New Jersey! And Claudia was just like, “Where’re the IC’s?”

    Reply
  56. Aiden

    How does memory in a compurter work

    Reply
  57. Bria

    I hope that I can see science live in person one day!

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  58. Calvin

    I love science live!

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  59. Ellie

    I love r-51!!!! i loved this episode of science live!! i wish i could come see it live!!!

    Reply
  60. Leah

    Hi from Delaware!

    Reply
  61. Elli

    I love the proteges because they make learning so fun and adventurous it’s my favorite part of science live especially this one it was hilarious!

    Reply
  62. Adrian

    LOVE science live!!!

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  63. Logan

    What great news on treatments for cancer!

    Reply
  64. Alexia

    I love this program so much, i wish i could see it in person

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  65. Maura

    i <3 science live!

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  66. Madelyn

    I love the part that has the Proteges (39:33). It is super interesting!!

    Reply
  67. Marilyn

    Love learning something new every science live.

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  68. Kameron

    The brain is truly fascinating.

    Reply
  69. Carter

    How did they come up with the cancer treatment?

    Reply
  70. Corbin

    I love r51 so much!!!!!!!

    Reply
  71. Wyatt

    I learn so much from each science live!

    Reply
  72. Sadie

    I like how Dr B was talking about the rocket

    Reply
  73. Dakota

    The gallium idea is so fascinating!!!

    Reply
  74. Sarah

    🎶my hearts a stereo🎵

    Reply
  75. Matthew

    Science live is amazing!

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  76. Daniel

    Hey from north Carolina here and we love science live!!!!!

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  77. Ryleigh

    Learning about stereo and its use in movies and music was really intresting!

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  78. Teddi

    Who knew about gallium!! awesome!

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  79. Logan

    Science Live has really helped me learn new stuff!

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  80. Beau

    I love this show.

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  81. Emmie

    Science live is 🤯 !!!

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  82. Reese

    Loved the live this week, great work!

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  83. Chandler

    The gallium was cool how it melted down. The proteges are crazy.

    Reply
  84. Katherine

    The gallium idea was amazing!

    Reply
  85. Brooklynn

    I loved the gallium idea!!

    Reply
  86. Tyra

    i love science live it is always so interesting!

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  87. Trevor

    This one was cool and learned from it. I would like to own a company one day.

    Reply
  88. Aurora

    I Love you Caleb and David!!!😍

    You are so sweet and so so funny!😂 Thank you for teaching us

    Reply
  89. Jalen

    I really loved the cowboy part with the circuits and things

    Reply
  90. Rachael

    A new Bactria that detects cancer???? I wonder if that could be life changing in the future. How’d they even start this experiment?

    Reply
  91. Arianna

    Science live is awesome!

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  92. Bhaltair

    I like watching the Proteges.

    Reply
  93. Daniel

    Researchers at the University of Waterloo are developing engineered bacteria designed to target and attack cancer cells. These bacteria can thrive inside tumors and be programmed to release substances that help destroy cancer from within. The goal is to create more precise treatments that cause less harm to healthy cells than traditional therapies.

    Reply
  94. Zoee

    Science is amazing.

    Reply
  95. Diego

    I get the point of binary but still I use arduino though.proteges are so cool and smart so is Dr.Roger Billings and Dr.Pajet Monet

    Reply
  96. Rialynn

    I love science live

    Reply
  97. Niela

    r 51 has more potential than just a socianal super star. He has MORE! He just can’t find it yet.😜

    Reply
  98. Rylie

    science live make me smile!!!!

    Reply
  99. Tylean

    I always learn so many new things on the science lives. Thank you for creating them for us.

    Reply
  100. London

    This was a great live! First one and I’m already feeling good about this!

    Reply
  101. Grayson

    Can’t wait to see what the Protoje’s show us next!

    Reply
  102. River

    This was my favorite science live

    Reply
  103. Violet

    Thank you Dr. Billings

    Reply
  104. Catherine

    Science live is always so interesting!

    Reply
  105. Issic

    I loved the 🚀

    Reply
  106. Kyleigh

    I enjoyed watching Science Live this week! Great episode!

    Reply
  107. Valeria

    Very interesting and very good way to learn about new things in a video. Stating on how inventors have a big impact, especially in science. And the ways they have a big impact and what they do to be able to have that impact..

    Reply
  108. River

    Thanks for teaching me new things!!

    Reply
  109. Issac

    i thought it was so interesting learning about all the parts of a rocket

    Reply
  110. Nicole

    Science live is so cool!

    Reply
  111. Knoxton

    I want gallium! And I love the proteges!

    Reply
  112. Julie

    The Proteges and the Inventioneers were so funny , THANK YOU!!!!

    Reply
  113. Charles

    Enjoying the Science Live videos. Watching from Virginia.

    Reply
  114. Miranda

    Awesome episode as always! Love Science Live!

    Reply
  115. Koopar

    Who discovered gallium?

    Reply
  116. Khloe

    This science live was so cool! Excited for next weeks video!

    Reply
  117. Declan

    I loved the division part! 😁

    Reply
  118. Sarah

    Thanks for another awesome video!!!

    Reply
  119. Zoe

    The brain is so cool to learn about! I just love learning about it. Thank you for the great video.

    Reply
  120. Delayne

    How long is the whole cycle to turn gallium into hydrogen is it a really long time?

    Reply
  121. Emma

    Hip hip hooray for aclleus!

    Reply
  122. Logan

    I want to be an engineer

    Reply
  123. Clara

    The Proteges are so fun to watch. And I also enjoyed the gallium spoon.

    Reply
  124. Michael

    The brain is really interesting and i learned so much about it.

    Reply
  125. Sawyer

    Can’t wait for the cancer treating bacteria that will eat the bad cells!

    Reply
  126. Rafael

    Science live is already interesting, but when they talk about Robots and coding, I LIKE IT EVEN MORE!!!

    Reply
  127. Savannah

    Hello from NY!

    Reply
  128. Kade

    I thought the gallium part was pretty interesting.

    Reply
  129. Aracli

    Am trying to to graduate with honors, good grades, and high gpa.

    Reply
  130. Evangaline

    Learning is awesome!

    Reply
  131. Kassandra

    I love science live!!!!

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  132. Mykah

    It’s-awesome how you help us achieve our goals

    Reply
  133. Sophie

    Hello from Texas!!

    Reply
  134. Kaydence

    So happy to be here for episode 300! 🥳

    Reply
  135. Rachel

    Love the recent developments in cancer research!

    Reply
  136. River

    I like learning about rockets I think they are really interesting!

    Reply
  137. Simran

    I learn so many new and interesting things that I have never heard of before on science live!

    Reply
  138. Caden

    i loved this one with the cowboy theme

    Reply
  139. Audrey

    It was cool that the spoon melted

    Reply
  140. Caden

    this was a good one i loved the cowboy skit

    Reply
  141. Lucas

    I LOVE German Shepherds, they’re my favorite type of dog! Oh, I guess I like science as well. They are both very interesting, but German Shepherds are more interesting than science, only by a little bit. LOVE GERMAN SHEPHERDS!

    Reply
  142. Rhylie

    Science live is the best and I learn so much!!

    Reply
  143. Kya

    The video was about cancer cells treatment that eats cancer. Also, it talks about how to study and make goals using Accelus.

    Reply
  144. Alexandria

    When i heard the mention of making your own business it reminded me of how my mom started her own business and its because of how hard she works is how she got to the goal of making a book about your health.

    Reply
  145. Sophia

    Didn’t realize our dual-listening abilities that we take for granted is so essential. I always appreciate learning about seeing the wonders of our how our body processes energy. Science Live should keep teaching students about the body and it incredible capabilities!

    Reply
  146. Henley

    Hello from Arkansas

    Reply
  147. Jernasha

    These are such good ideas!!

    Reply
  148. London

    The brain is my favorite organ to learn about. I learned some interesting stuff!

    Reply
  149. Jayden

    I love these science lives please keep doing them

    Reply
  150. Maddison

    Watching from Texas!!

    Reply
  151. Susanna

    After all it’s called counting canyon not division canyon 🤯(amazing)

    Reply
  152. Raina

    I thought the gallium metal was really interesting. Just by touching it melts it. Wow, and it’s not even more than 80 degrees.

    Reply
  153. Layla

    How hot is the water ? That melted the spoon in just seconds

    Reply
  154. Micaela

    This video was super fun. And the proteges are soooo funny hahahahahahah.

    Reply
  155. David

    Happy 300th episode!

    Reply
  156. Aspen

    Hi from Oregon

    Reply
  157. Flynn

    Gallium is so cool

    Reply
  158. Katelyn

    I think that it’s cool how the optic nerve works.

    Reply
  159. Jayvion

    Thank you for making Acellus its the best homeschool ever. I like the science live videos too.

    Reply
  160. Brody

    I didn’t know how stereo systems were born. I’ve always wondered about that.

    Reply
  161. Macy

    I love the gallium idea!!!!!

    Reply
  162. Keagan

    this is the reason why science is my favourite subject

    Reply
  163. Jrake

    An ic Divide by 3 is an integrated circuit that reduces an input frequency to one-third of its original value. It is commonly used in digital electronics and timing applications where specific frequency control is needed, and of course the secret weapon was a girl.

    Reply
  164. Greyson

    math is the best!

    Reply
  165. Caleb

    I would like to learn more about the metal in the spoon that melted

    Reply
  166. Anthony

    When are we expecting to use the hydrogen to help our planet?

    Reply
  167. Vannessa

    I love the gallium idea very very smart!

    Reply
  168. Xavier

    Hello from WV

    Reply
  169. Oliver

    hey I have a question what was your favorite science live video? ):

    Reply
  170. Abbi

    I really enjoyed the part about how stereo came about (especially since I’m a vinyl record collector)! Love the protégés getting more unhinged every episode! I love it! Was not expecting Caleb to start playing a Nirvana guitar riff 😅

    Reply
  171. Kelsey

    Science live is so cool!!

    Reply
  172. Abernathy

    I thought that it was Interesting that there were grooves in the record lines and that we could see them!

    Reply
  173. Herminia

    I love these science lives!

    Reply
  174. Monterrius

    I love to learn about music and how it was created.

    Reply
  175. Brantley

    9➗3=3!

    Reply

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