Vacuum Tube Computing

February 4, 2026  •  EPISODE 296

How did computers go from filling entire rooms to fitting in your hand? In this episode of Science LIVE, Dr. Roger Billings and the Protégés explore vacuum tube computing and the technology that launched the digital age. Hear stories about early machines, the Billings Computer, and floppy disks as Dr. Billings shares his firsthand experiences helping shape modern computing.

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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5,811 Comments

  1. Ahriana

    Watching from Kansas! Really enjoying this live so far!

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  2. Gabriel

    hello from indiana

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  3. Malachi

    Who first invented the computer?

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  4. Maximiliano

    Don’t forget Trinary computers which use negative voltage!

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  5. Cole

    My mom is so excited she said she never understands how computers work

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  6. Abbie

    Caleb and David are very funny

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  7. Abrianna

    I love computers they are so smart.

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  8. Noah

    Wow this was amazing

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  9. Zachary

    Thank you for tonight’s video.

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  10. Aliahnis

    Whenever they send out radio waves, how many people needed to work on it the first time?

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    I really love the editing style in this skit! It’s very engaging to watch.

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  12. Sebastian

    the high editing skits are really funny and i love watching them!

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  13. Tyler

    The plane scene makes learning fun! it enhances the live and makes it fun to watch! I really enjoyed learning about how computers work as well!

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  14. Mason

    Oh my goodness the salute is hilarious! Really love the proteges

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  15. Tran

    I love Acellus!

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  16. Jonathan

    I am so excited to learn how computers work!!

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  17. Bradley

    Exactly. Science is like a complex web of math, hypotheses, and many more. It’s impressive how we went from having things including inventioneers to this. I began watching you during my school year and it’s impressive how far we’ve come. I wish you all good luck and an exciting school year.

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  18. Jacob

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  19. Jadiel

    well, the drink is ruined. guess they didn’t think that one through.

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  20. Rileigh

    I liked the section about Ai and how it’s powered. Sending it to space does seem like a sensible idea I guess! Never really thought about it before today.

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  21. Avaya

    How interesting! I love thinking about how technology we use every day ACTUALLY works!!

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  22. Elijah

    My mom learned binary

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  23. Aria

    I am really enjoying the science live today!!

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  24. Brent

    Hello from Kentucky and today I ask why are some elements so reactive/volatile?

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    I loved the plane scene. It made me laugh a little bit when the pizza was delivered.

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  26. Ryan

    hi from Texas!!!!

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  27. Nehemiah

    how does the computer work so efitiantly

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    Hello from texas

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  29. Trenton

    Wow….. Caleb and David in The helicopter was really cool.

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  30. Deacon

    i love these they give so many cool facts and information

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  31. Ryan

    hi from Texas!!

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  32. Tyler

    The plane seen makes learning fun! it enhances the live and makes it fun to watch! I really enjoyed learning about how computers work as well!

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    I love the skits!! Theyre so fun 😋

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    Love this!

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  41. Jaidah

    hey from montana, i think radio waves are interesting and i like learning new things about science.

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  42. Serenity

    So funny

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  43. Isha

    science live is my favorite

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  44. Eisley

    The protege part was so funny with the delivery! Thanks for the laugh

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  45. Kalista

    Hi from Los Angeles! Computers are complicated.

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  46. Devin

    Will Science live happen through summer?

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    I love science ❤

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  49. Dominick

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    Here from Kentucky!

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  51. Alice

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  52. Katlyn

    loving the skits at the end of these they’re so fun!!

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  53. Samantha

    From ct

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  54. Rowan

    I I like the skits! keep it up!

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  55. Blakyn

    How do you trap electricity to make it into a conductor? How do you put it in the wires to make your power go running ???

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  56. Chloe

    Loving todays live.

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  57. Myles

    Hello from Texas!

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  58. Oliver

    pizza time.

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  59. Katrina

    Hello from nd!!! I love watching these science lives!!!!

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  60. Bryce

    its interesting how they turned a vacuum tub into a computer

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  61. Emily

    hello from nebraska!

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  62. Jesus

    watching from TEXAS!!!

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  63. Bradley

    Hello from north Carolina! I’m glad I get to watch this every Wednesday.

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  64. Alexis

    I love learning with Acellus.

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  65. Talia

    I love the editing of this segment!

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  66. Anisbel

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  67. Avi

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    I love you all

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  73. Elijah

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  74. Lillian

    It’s like a movie but shorter.

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  75. Colton

    so ram means temporary and rom means permanent

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    Hello from Kentucky!

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    Hi , Watching from massachusetts!

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  79. Cristin

    Good evening, glad to be here this evening, enjoying live.

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  80. Brayden

    Hi from texas

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  81. Tahir

    I am amazed that a single AI data center consumes as much electricity as 1.5 million homes. That is quite a lot, but it is good that efforts are being put forth to reduce the burden on the environment.

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    Hello from New Jersey!

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    Hello from NY!! Have a good day/night

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    hello from Arkansas

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    Hello from Texas.

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  86. Isra

    Hi from Misssouri

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  87. Adeline

    Can zero gravity and sub zero temperatures make data computation function differently?

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  88. Abel

    I love learning about space too!

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  89. Afrah

    Hello! Dr B . I am happy to be here

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  90. Rowan

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    Howdy from Texas! Tobias your voice was hilarious at the intro!

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  95. Shannah

    I wonder what else could be powered from space? What else can Hamilton’s coding be used for? Also it’s so impressive that they wrote all that code out by hand!

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    hello from mobile alabama

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  100. Chase

    Its wild to me that vaccum tubes were the first electronic device

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  101. Camryn

    how do the wires get electricity in between the two?

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  102. Izzabella

    hello from ND. -20 below here.

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    Hi from Tennessee it was very interesting to learn more about the moon landing

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  108. Emily

    Hello from Maryland! I’m happy to be watching another great episode.

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  109. Braden

    It’s interesting how vacuum tubes led to computers. Who would have thought?

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  110. Emilianna

    hello from texassss <3

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  111. Christopher

    Space is so interesting! I love learning about each planet!

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  112. The

    There are a lot of mysterious things out of space. I want to explore them.

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  113. Arianna

    These science lives are so helpful.

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  114. Jayden

    I never knew how much work is required for a trip to the moon and how one problem can throw off the whole project.

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  115. Benyt

    I like the moon

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  116. Eric

    how do they intercept the sound waves?

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  117. Elijah

    I am watching from tn

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  118. Charles

    how far away can we send signals in space?

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  119. Mattison

    Hello from MO. I am excited for Science Live!

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  120. James

    does the weather change radio waves?

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  121. Kevin

    Why do the positions of an electron change again, upon being seen by humans?”

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  123. Harper

    Hi from Albuquerque how did they think of the flash light

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  124. Mason

    Hi from Indiana!

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  125. Teague

    His tie is so shiny.

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  126. Eugenio

    I didn’t know that a vacuum tube sends out electrons

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  127. Agostino

    I want to see DR.TOBIES ELON MUSK MADE TESLA cars and truks show us a photo.

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  128. Isla

    Do space data centers work more efficiently without gravity?

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  129. Mason

    hi from texas!

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  130. Jason

    Hi from Massachusetts!!

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  131. Cheyanne

    It seems as though her bosses should have listened to her in the beginning, but at least they fixed the problem before the official moon landing mission.

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  132. Emma

    my bithday is on the 19 of february

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  133. Moriyah

    Hi from Houston Texas hi Dr. Roger Billing’s um my Birthday is six days away i’m so excited 😆 i’m turning nine and i’m in fourth grade

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    Loving the live ❤️

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  138. Khloe

    khloe from houston teaxas how did they know how exactly to read all of those radio waves and gather legit information?

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  139. Greyson

    Tobias needs a longer segment

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  140. Mary

    I’m so excited for this science live this week, these are so interesting.

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  141. Jayden

    Watching from Maine

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  142. Jeremiah

    Hello from MO,

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  143. James

    mom says she would like to see a class all about strange things in nature.

    please and thank you

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    Amazing Science Live this week. It’s crazy how there’s so many scientific things there are to talk about.

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  145. Natasha

    What does the grid look like?

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  146. Simon

    I can’t remember what type of material is in the coherer?

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  147. Mae

    Hello From Haiti

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  148. Joel

    I came from Wisconsin and now I am in Texas, the weather is drastically different.

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  149. Gabriella

    Space is so cool!

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  150. Tressa

    Hi from Wyoming

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    Hello from Maine

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  152. Philip

    I enjoyed learning about space and the rocket. It is insane how precise they had to be to get to the moon!

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    How they landed on the moon was cool.

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  155. Casey

    Radio waves are fascinating

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    I love Tobias’s segments

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    Hello from Tennessee!

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  158. Tobias

    how do they measure the lenght of the rocket to land?

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    Hi from Wisconsin!

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  160. Arianna

    hi from texas.

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  161. Esperanza

    How many times did they have to simulate the process for the project to the moon before they really got it correct?

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    Hello from Butte Montana!

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  166. Sean

    how big would you need a computer to run 10MB back then?

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  167. Rachel

    Hi from MA. I found the story about the moon very interesting. Those are the kinds of stories that you do always get to hear.

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    Hello from Texas! This is my first week and I really like this way of learning.

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    Missouri is beautiful

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  171. Corbin

    Hi I think a pipe organ class would be awesome

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  172. Mila

    I’m having fun!
    but are we going too see r51 this week?

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  173. Ahmed

    can science have a solution to all my problems?

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  174. Hayley

    I love the science lives!

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      Science live is great!

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      I have been interested in computers for a while and how they work so this will be good for me

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    • Layla

      I’m going to Texas I live in Florida i love Science live i love R51 they are so funny 😎😹✨

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  175. Kaylyn

    How did they find out how to send out radio waves?

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      So Awesome!

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