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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Wow! That many satellites, I winder how much that will cost.
Why did the vacuum tube not make any money.
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Hello from Puerto Rico!
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I think its funny how the first calculator was named model K because it was invented in the kitchen
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Vacuum Tube Computing seems like a very complicated thing. I learned so much during this video, cant wait for the next!
Would there be a way to recycle satellites if they’re outdated? It would be interesting to see that.
Computer differences through time as technology gets better interests me a lot.
When coding was first used, did they just use 1’s and 0’s? It would be a Intriguing to look at that concept.
That’s cool that your company was the second largest producer of floppy disk drives
AI has lots if information.
Two things used in vacuum tubes are water and electricity.
Switches were used in early computers.
Computer languages are made of ones and zeros.
I love using my computer, but do not know much about the inner workings.
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Man it doesn’t surprise me that the military funded the first computer, and I hope Tobias gets felling better!
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What is vacuum tubing?
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I didn’t know that vacuum tubes were used in a lot of things. (:
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It’s so cool that vacuum tubes help amplify signals!!
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Thank you. This is a very a fun topic. My dad spoke of “floppy disk” back in his days.
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Crazy how we went from computer rooms to iPhone screens… crazy video this week!
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But wouldn’t putting all that radiated heat out into space cause a possible unknown issue? We could cause universe warming. Just a thought. We don’t know what that could cause. interesting idea though
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*thank you for the information on vacuum tube computing I would like to learn more about
Just one data center uses 2 gigawatts of power. Wow!
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How do data-centers work?
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Who else is watching from Austin Texas
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the size of eary computers is wild!
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This is so interesting. I enjoyed this video on vacuum tube computing.
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