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Dawn of the Computer (コンピュータの () () Konpyūta no Yoake) is the two hundred and sixth chapter of the Dr. Stone manga.


The chapter begins with a petrified Yuzuriha, determined to stay awake with the knowledge that her friends will come to save them. Taiju and the rest of the team sail their way up from Superalloy City to the American Colony, and soon upon their arrival, revive everyone. Everyone in Corn City is informed of what happened over the last several months, and are told the next task is to make a computer.

Back in India, Sai asks how it's possible to build a computer when Senku already said it would take years. After a basic demonstration of a half adder, Senku tells them that they'll be using parametron circuits instead of transistors. They quickly build a few of the donut-shaped components and assemble it into a half adder. Sai tests it out, showing it works just like their flag demonstration.

Yuzuriha then has a bad feeling about what Senku will ask of them, which proves to be correct as Senku says they'll need 200,000 of them made. They'll begin their age of automation and continue reviving a ton of manpower for Corn City in order to fulfill the request.

Characters in Order of Appearance[]

Chapter Notes[]

  • Everyone in Corn City is revived and brought up to speed.
  • The team in India build a parametron and a half adder.
  • It is shown the team in India have built a new mobile lab.
  • Corn City is tasked with building 200,000 parametrons for the computer.


  • Yuzuriha retained consciousness and kept track of how much time passed. This shows her mental strength increased since the first petrification; given she "woke up" upon her first depetrification.
  • As in chapter 122, Taiju attempts to give Yuzuriha a handshake upon revival, however this time Yuzuriha hugs him rather than accepting the handshake.
  • The ship for the group meant for America has been built.
  • The device Sai is playing with in the flashback is a Gakken EX-System, specifically the EX-150 model.
  • Xeno's castle is shown to have survived the years; likely due to being built from study metal materials. Though it was slightly overgrown with vegetation, much like the 21st century buildings during the first petrification.

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Story Arcs
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Source of the Petrification Saga
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The Truth of the Petrification Saga
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