Satellites definitely have multiple computers onboard. Their design philosophy evolved from aircraft which tend to use discrete computer for different tasks. Co

Satellites definitely have multiple computers onboard. Their design philosophy evolved from aircraft which tend to use discrete computer for different tasks. Communications, navigation, data logging etc. That's not counting the computers providing whatever the satellite's mission is and they almost always have redundant hardware to make up for failures which are common in space. So there are definitely far more "computers" in space than there are total satellites. Are there "hundreds of thousands"? I'm not sure.