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crwdns2933797:0Andrew Bookholtcrwdnd2933797:0crwdne2933797:0
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+ | [* black] At the heart of the Studio II lies an RCA CDP1802 microprocessor. |
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+ | [* black] The RCA CDP1802 was a bit of an unusual chip for its day. A version of the 1802 was [link|http://en.wikipedia.org/wiki/Silicon_on_Sapphire|manufactured] by depositing a thin film of silicon on a sapphire wafer. The extremely low electrical conductivity of the sapphire wafer prevented any stray electrical current caused by radiation bombardment from spreading to and possibly damaging nearby transistors on the chip. |
+ | [* black] Due to their inherent radiation resistance, six silicon-on-sapphire RCA 1802 processors were chosen to control the [link|http://en.wikipedia.org/wiki/Galileo_%28spacecraft%29|Galileo] spacecraft during its 14 year trek to Jupiter and its moons. They eventually burned up with the rest of Galileo when it was purposely steered into Jupiter's atmosphere in 2003. |
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