Binary Decade Counter

February 18, 2026  •  EPISODE 298

How do integrated circuits actually work? In this episode of Science LIVE with Roger Billings, explore the fundamentals of integrated circuits with a closer look at a binary decade counter and how it processes and counts electrical signals.

Learn more about the Acellus Robot Dance Contest and Acellus World, coming to Kansas City in May 2026! And get ready to discover fascinating science in the natural world—from hydrophobic spiders that repel water to the surprising fact that rainbows include invisible colors beyond what our eyes can see.

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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5,570 Comments

  1. Juliana

    Hello from New Jersey

    Reply
  2. Luke

    Hello from Maryland!

    Reply
  3. Haleiya

    There is a huge robot !!!!

    Reply
  4. Katherine

    i love that robot

    Reply
  5. Rahel

    Comment Thank you Lady Pajet!

    Reply
  6. Nayela

    Absolutely love watching these!!

    Reply
  7. Izabella

    When is the science fair?

    Reply
  8. Arlene

    Wow 🤯

    Reply
  9. Isabella

    I like your guy’s outfits today!!

    Reply
  10. Laiba

    Wow! Hello from Maryland!

    Reply
  11. Gracie

    Smotional

    Reply
  12. Hannah

    Thank you!

    Reply
  13. Raegan

    Are you Ms. Monet going to teach another class?

    Reply
  14. Ethan

    What is the biggest challenge of being a scientist and a inventor?

    Reply
  15. Noah

    Hi from Arizona

    Reply
  16. Brooklyn

    Interesting episode so far! Also, the little blue Acellus bot is so adorable!

    Reply
  17. Emma

    I love the Technology Spotlight

    Reply
  18. Lillian

    How did you come up with the name Acellus?

    Reply
  19. Michael

    yes… Ms Pajet has help me so much with her Social and emotional class. thank you.

    Reply
  20. Dean

    Hello from Texas!

    Reply
  21. Katelyn

    Hi from New Jersey!!

    Reply
  22. Judah

    The relation between light and heat from earlier is fascinating.

    Reply
  23. Austin

    hi from VA ice out

    Reply
  24. Makenzi

    We love you Paje!!! Socional. Adjective. Make a noise and make it a word.

    I’ve had you for my Social Emotional teacher since 5th grade and loved it. You HAVE changed my life! Thank you for everything you doooooo!!!!!!!

    Reply
  25. Matthew

    Hi from texas

    Reply
  26. Lily

    Hey from New Jersey! I’ve never really liked learning about science or being in science class, but this helped me to look at science from a different point of view and not just see it as a bunch of paragraphs and plot charts.

    Reply
  27. Aston

    I love seeing the new things I learn about science in the real world.

    Reply
  28. Travis

    running late but I made it!

    Reply
  29. Virginia

    Question for you: For a while now, we’ve been on the topic of radio. At some point, you’d brought up a “Radio class”, and I wanted to see if that might be an actual thing. I would certainly love if it was.

    Reply
  30. Katrina

    Hello from nd!! Loving this weeks live so far!!!!

    Reply
  31. Maria

    Dr. Pajet Monet has been an amazing teacher her wise words make a wonderful difference and is a very lovely person

    Reply
  32. Isaiah

    Hello from Maryland 1 question I have is I seen the photo of the guy with the bag over his arm and when it switch his body showed orange and red so does that mean humans are very hot but if I touch my head I don’t feel heat?

    Reply
  33. Stacie

    Loved it , it helped me understand science a little better and I got to listen to a lot of interesting stuff

    Reply
  34. Jeniah

    Hi from Georgia

    Reply
  35. Arianna

    hello from Illinois

    Reply
  36. Marley

    My name is Marley Parrish and I am from Illinois. I really enjoyed how you brought on Kelsie to share her extremely bright story at such an incredible age. I love when people get the recognition that they deserve. Thank you so much for another great episode.

    Reply
  37. James

    Science is one of the best subjects in my opinion.

    Reply
  38. Matthias

    I liked the infrared and ultraviolet filter

    Reply
  39. Ember

    hello form IL :3

    Reply
  40. Isabella

    Hello from New York

    Reply
  41. Josiah

    Josiah is whatching

    Reply
  42. Elijah

    Pajet Monet your class is incredible! Thanks for everything you do.

    Reply
  43. Kaitlyn

    I love R2D2!

    Reply
  44. Hadley

    Love these videos!!!

    Reply
    • Aidan

      So cool!

      Reply
    • Elizabeth

      Area 51 dance off with Acellus

      Reply
  45. Aubrie

    That is a big robot!

    Reply
  46. Eli

    How do the water spiders make there bubbles so they can breathe and live.

    Reply
  47. Adlynn

    hello from IL

    Reply
  48. Isabella

    Hi from new York

    Reply
  49. Lorelai

    Social emotional helped me understand some things when my mom would explain to me why we should be kind.

    Reply
  50. Sakina

    I’m wondering why you have a big acd2 robot?

    Reply
    • Zahra

      This topic was so interesting! I’m so glad I was able to join today.

      Reply
  51. Braelyn

    hey from mississippi

    Reply
  52. Allee

    Hello from Indiana!

    Reply
  53. Sabastion

    It is very interesting

    Reply
  54. Elina

    I never knew science could be so interesting

    Reply
  55. John

    Hey from tenneessee

    Reply
  56. Madison

    Hello from Mississippi. I do not like any kind of spiders, but it is cool to know that they can web a bubble to be able to go under water.

    Reply
  57. Emmalynn

    Great video! love science lives! always so interesting!!! Hello from Texas by the way!!!

    Reply
  58. Ellie

    hi from Colorado 🙂

    Reply
  59. Cannon

    thermal is cool

    Reply
  60. Addison

    hello from SC!

    Reply
  61. Jesus

    hello from chicago!

    Reply
  62. Kadence

    I have a invention for science fair it will help a lot of kids how is gotting ready for school or grownups. From TN I love science its my favorite.

    Reply
  63. Zoey

    l love this, this is so funny.

    Reply
  64. Deams

    Hello from Nc!

    Reply
  65. Kaylie

    hi from Texas

    Reply
  66. Dylan

    Hi guys! Happy to spend this science live with you all

    Reply
  67. Ashlyn

    Thank you

    Reply
  68. Sawyer

    Hello from sanantonio texas

    Reply
  69. Sabastion

    Ms. Pajet how are you able to change peoples lives so easily and connect with them even without having to be in the same room as them?

    Reply
  70. Angel

    Cool live!

    Reply
  71. Aiden

    Happy Lunar new year!!

    Reply
  72. Georgana

    Love these lives and science!

    Reply
  73. Ethan

    Hi from IN

    Reply
  74. Landon

    hello from tennessee

    Reply
  75. Carter

    Hi from North Carolina. Big fan. I love science, coding and spanish.

    Reply
  76. Andres

    Science live shows me new things that is fun!

    Reply
  77. Ryder

    this is amazing

    Reply
  78. Jace

    Watched from Texas

    Reply
  79. Kadyn

    You have changed all of our lives Dr. BIllings. You are incredible too.

    Reply
  80. Raegan

    I am in that class that she teaches and she has helped me think about the world differently.

    Reply
  81. Emma

    Hello! Happy to be here!

    Reply
  82. Kamryn

    Hello from Texas!

    Reply
  83. Deepak

    It’s so interesting

    Reply
  84. Carolynn

    science live is so cool

    Reply
  85. Crystal

    Hi form Nj!!

    Reply
  86. Grace

    Happy to be here!

    Reply
  87. Geo

    Hello from NEW JERSEY!!

    Reply
  88. Federico

    could we us social emotional learning skills to debug the world secrets

    Reply
  89. Payton

    I have to admit I was also a little curious when I first took the social emotional class as to what exactly I’d be learning. But the class actually helped a lot, and it was fun to participate in!

    Reply
  90. Shayeal

    Hi from AZ

    Reply
  91. Savannah

    Hey from GA

    Reply
    • Clara

      I from GA!

      Reply
  92. Ashton

    Hello from the Milky Way in the U.niverse

    Reply
  93. Caraya

    Science Live is definitely something interesting to look forward to every week!

    Reply
  94. Marian

    Our Social Emotional Learning class is so important and appreciated!

    Reply
  95. Aubree

    hi from ga

    Reply
  96. Howard

    Lady Pajet is a great teacher

    Reply
  97. Eliana

    hi from texas

    Reply
  98. Slayter

    very interesting as always

    Reply
  99. Kamryn

    Learning about water spiders is cool, can’t wait for the next video.

    Reply
  100. Gabriel

    Hello from Florida.

    Reply
  101. Willow

    Hey from NC!!

    Reply
  102. Leonardo

    Why was the colors in the shade hotter?

    Reply
  103. Jake

    Hi from NY!

    Reply
  104. Saarah

    hi from new york

    Reply
  105. Lilly

    hi from texas

    Reply
  106. Ziven

    That is so funny! I love Science Live.

    Reply
  107. Serenity

    Hi from Washington !!

    Reply
  108. Beja

    Hey from Texas!

    Reply
  109. Shaylyn

    How hot can the color spectrum get and how cold can it get

    Reply
  110. Asmaou

    I wonder what Dr .Pajet ‘s day job is?

    Reply
  111. Chaim

    i love science live

    Reply
  112. Raylan

    Hello from North Carolina

    Reply
  113. London

    Hello from Bahamas.

    Reply
  114. Jeremiah

    I love science live. 🙂

    Reply
  115. Sabastion

    This is an amazing live.

    Reply
  116. Henley

    Hello from Arkansas

    Reply
  117. Carli

    Doctor Roger, is it alright if you can teach Greek mythology? I really want to learn what people worshipped and what they believed in.

    Reply
  118. Ashlyn

    Hello from Montana

    Reply
  119. Jayden

    HI from Illinois

    Reply
  120. Zoe

    Hi from Texas

    Reply
  121. Cadence

    Hi from MS

    Reply
  122. Bodey

    Hi from Alabama!

    Reply
  123. Ethan

    What is the best way for a scientist to show their skills or talents without discovering or inventing something?

    Reply
  124. Vitaly

    Hello, watching from Wisconsin!

    Reply
  125. Caleb

    I live in Texas

    Reply
  126. Aaram

    Social Emocional Learning class is amazing!

    Reply
  127. Soham

    I like the V/I light [visible and invisible light]

    Reply
  128. Sierra

    Hi from NC, I love the live so far 🙂

    Reply
  129. Maleah

    Tell us the story of how you and PJ Monet met

    Reply
  130. Theory

    Hello from Missouri!

    Reply
  131. Carson

    hi from AZ

    Reply
  132. Keigondominic

    hello from New Orleans

    Reply
  133. Savannah

    Hi from TN

    Reply
  134. Madison

    I learned that someone made invisible light.

    Reply
  135. Jacie

    hello from louisiana

    Reply
  136. Reegan

    Science live!!

    Reply
  137. Ashvik

    Wow! That’s a nice robot.

    Reply
  138. Sabastion

    The part about the visible and invisible light is incredible! It really makes me think about all the lights around me and what they are each classified as.

    Reply
  139. Alexis

    its cool how there making materials floot on top of the water

    Reply
  140. Conor

    Hi from NE

    Reply
  141. Mkaleb

    I enjoy the lessons about social. It’s very important

    Reply
  142. Wencai

    I love Dr.B

    Reply
  143. Hayden

    I am really enjoying tonight’s live, I’m learning so much.

    Reply
  144. Leilani

    Hi from North Carolina!

    Reply
  145. Artur

    i didnt understand why we could see through the bag and not through glasses

    Reply
  146. Emma

    hi from Kentucky

    Reply
  147. Hayden

    hello from ct!

    Reply
  148. Michael

    hello from TN

    Reply
  149. Nicholas

    I think the robot looks neat

    Reply
  150. Aniyah

    Hello from Indiana!

    Reply
  151. Abigail

    Hi from North Carolina!!

    Reply
  152. Corryn

    Hello from Kentucky!

    Reply
  153. Luke

    Is their going to be ac d2 fair this year

    Reply
  154. Avi

    i wish life was in infered light, those colors were so cool!!

    Reply
  155. Maddox

    HELOE FROM MO!!!!!!!!

    Reply
  156. Lucas

    hi from tn

    Reply
  157. Audrey

    Is there an age limit for the science fair?

    Reply
  158. Amalia

    Hello from Puerto Rico! 😀

    Reply
  159. Zak

    hi from NJ

    Reply
  160. Savannah

    l love social emotional!!!

    Reply
  161. Luigiano

    I like that big ac-d2 From Luigiano

    Reply
  162. Sterling

    Hi from RI.

    Reply
  163. Myah

    You guys are so cool. Hi from Virginia.

    Reply
  164. Andrew

    Hi from Georgia

    Reply
  165. Kentleigh

    hi from LA

    Reply
  166. Olivia

    hi from texas

    Reply
  167. Paisley

    I love DrB he is so funny and he makes science live so fun and I love their Aditued it makes me happy every wensday it is so nice for 1hour to be listening to them laugh and have fun I love when DrB talks about his life storys 🤣✌️🤣

    Reply
  168. Caleb

    hi from GA

    Reply
  169. Genevieve

    Question!: If we can see red, but can’t see infrared, what would it look like right in the middle? Like, on the verge of when it becomes visible/invisible.

    Reply
  170. Harlowe

    I love R51

    Reply
  171. Keegan

    Hi from MS!

    Reply
  172. Oliver

    “It made me laugh when they said “If you can’t say it, make it up!” So funny!”
    Typed by mom

    Reply
  173. Hayden

    “Socianal,” too funny! Did I spell that right?

    Reply
  174. Jeremiah

    That’s funny, sometimes I have trouble saying words too.

    Reply
  175. Abriana

    Hello from wyoming

    Reply

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