Technological progress is sure to supply the necessary components.Moore's law, which holds that the processing power of a single computer chip roughly doubles every 18 months, applies to sensors, too.

技术的进步必然会为这一设想提供技术支持的零部件，而摩尔定律所说的单台计算机芯片的处理能力大概18个月就会翻一番，现在看来同样适用于传感器。

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A PSU (power Supply Unit) fan is always running when the computer it powers is on.

只要开机，电源风扇就会一直在转。

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It USES 12 volts, which is a voltage also provided inside an ordinary computer case via the power supply.

它使用的是12伏的电压，这个电压也是在普通的计算机中通过电源提供的电压。

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Power-Over-Ethernet could end up being a universal power supply for much computer hardware as the cables and connectors for it are the same all over the world.

BBC: NEWS | Technology | Net-powered computer goes on show

The PC power supply is probably the most failure-prone item in a personal computer.

FORBES: Perfect Power: Clean Energy's Killer App

But experts say a successful, large-scale attack on U.S. computer systems could hobble electric-power grids, transportation networks and industrial-supply chains.

CNN: U.S. at risk of cyberattacks, experts say