Читать книгу Laptops For Dummies - Dan Gookin - Страница 23

When computer companies specify the weights of their laptops, I'm certain that they do it under ideal conditions, possibly on the moon or at another location where gravity is weak. The advertised weight is, as they say, “for comparison purposes only.”

Commonly left out of the laptop's weight specs is the power brick, the AC adapter that connects the laptop to a wall socket. When the laptop isn't running on batteries, you need the power brick to supply the thing with juice, so the power brick is a required accessory — something you have to tote with you if you plan to take the laptop on an extended trip.

Back when laptops were novel, the advertisements never disclosed how much the power brick weighed — sometimes half as much as the laptop itself! Either that or the power brick was even bulkier than the laptop, as shown in the figure, in the obnoxiously big Dell 320LT power brick (and its cumbersome 30-minute batteries). Lugging around those items isn’t convenient. Things are better today.

FIGURE 1-6: The NEC UltraLite.