You can play PS3 games on your PS4 with Sony's PlayStation Now streaming service — here's how

You can play PS3 and PS2 games on your PS4 or PC by signing up for PlayStation Now, Sony's game streaming service.
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How to use a PS3 controller on PC: Wired or Bluetooth

The PlayStation 3's DualShock 3 controller wasn't originally designed with the PC in mind. But who cares: We're gonna do it anyway. The DualShock 3 isn't quite as easy to use on PC as a modern Xbox ...