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If that's all true, then why does it tell you to use one in Ben's book? There is a 7805 going to the screen. If there is already 2 on audio, and none needed for the screen, then why?

Why does it need 2? one for each speaker?

Does a ps1 screen have a 7805? If it does, does that mean you could take it out and use it elseware and just run 5 volts to the screen? And if it does have a 7805, why does it tell you to make a voltage regulation circuit with one in Ben's book?

I am interested in 2 normal NES controllers. How does $12 sound?[/b]