| Electronics advancements have changes our life a | | | | and television are powered by direct alternative |
| lot. We are always surrounded by some kind of | | | | current, whereas portable handheld devices like |
| electronic devices. Human dependency over | | | | laptops, mobiles, PDAs, music and video players |
| electronic devices has increased too much to | | | | are battery powered. Some devices like laptops |
| avoid their use in daily life. No doubt, modern day | | | | have dual facility to run by direct current as well |
| electronic gadgets are very useful and a helping | | | | as with in-built batteries. However, the universal |
| elements in carrying out several tasks effectively. | | | | truth is that all these devices need some kind of |
| All electronic devices are powered by electronic | | | | electronic energy to perform their desired actions. |
| energy. In general, Static devices like computers | | | | |