Please Help Me, I Need Some Answers Fast!

OK, First of all Thank you for reading, and second, I was wondering if I could use the following Emulators on a PDA:
      NES (Nintendo Entertainment System, has games like the first mario,and Dunk Hunt)
      SNES(SuperNintendo Entertainment System,had games like Super Mario, and Smash Tv)
      Genisis ( had games like Golden Axe )
      N64 ( Super mario 64, mariokart 64)
      Playstation 
      PS2
      Xbox

Thanks again for the help everyone, I appriciate it.