| 1. | Data already often move between electronic and photonic forms at the periphery of a computer system , on their way to or from a cd or dvd , display monitor , mouse , camera , stereo amplifier or fiber - optic network 在电脑系统的周边设备里,资料已经常在电与光的形式间变换,例如进出cd或dvd 、显示器、滑鼠、照相机,立体声扩大机或是光纤网路。 |