Pretty much anything launched into space uses radiation-hardened electronics. I don't know what Cassini has on board, but this is popular: http://en.wikipedia.o

Pretty much anything launched into space uses radiation-hardened electronics. I don't know what Cassini has on board, but this is popular: http://en.wikipedia.org/wiki/IBM_RAD6000 http://en.wikipedia.org/wiki/IBM_RAD6000