一忌频繁开关 因为电子原器件在通电时，温度升高，断电时温度下降，冷热经常变化会促使计算机的元件提前老化，缩短使用寿命。 二忌靠近强磁场 例如磁铁、大功率音箱、电扇等产生强磁场的电器。因为计算机显示器在磁场作用下会产生图像变形，如果长期受其影响，显示器图像将会 Avoid frequent switching Because the original electronic devices in the power, the temperature increases, the temperature drops when power is off, frequent changes in hot and cold will cause the computer’s components ahead of schedule, shorten the service life. Two bogeys near strong magnetic fields such as magnets, high-power speakers, fans and other strong magnetic field generated electrical appliances. Because the computer monitor in the magnetic field will produce image distortion, if the long-term impact, the monitor image will be