New employees become productive more quickly, and, when a power supply goes bad or an employee takes a vacation, it's much easier to swap in a new computer or co-worker.

新员工可以更快地变成熟练工人，电力供应不足或某个员工休假时，将工作移交给一台新计算机或同事也变得更加简单。

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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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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.

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Perfect for slipping into a laptop bag or pocket, all of Iomega's 2.5-inch portable hard drives are host powered, requiring no external power supply beyond the power provided through the USB bus on a personal computer, laptop or netbook.

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This computer has no internal power supply, but when a specially designed reader sends out a radio signal, a tiny antenna draws power from the wave and uses it to wake the computer up.

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