Too long using computer have negative impact that unprecditable for us and we must know it from now. here i will focus in laptop, because the amount user of laptop is larger than PC. And laptop has more efficient but if you  know, laptop have some bigger impact for us.
        The most focus from this article is some effect of using PC/laptop in long time. Actually the effect doesn't appear directly when we use  it, but believe it or not PC/laptop are very dangerous to our health. Sometime we felt very enjoy to play some interest games or browsing internet etc, and its enjoyment make us spend more time to stay infront of  the laptop/PC. Here we'll explain to you about the effect to our health.
         first of all,that if we use pc/laptop in long time is the radiation wave from pc/laptop to our body,believe or not that can make or it can be the causes of cancer,and then that can make us lazy to do something,such us when we stay in front of the pc/laptop and we playing game,it can make us lazy to study,talking to our family,and then the big effect will can happen if we use pc/laptop too long it can make us far away fom our relation like family,close friend and etc.Not only that but also it can disturb our healthy of eyes,cause this organ is very sensitive if we use in more time,so if we use pc/laptop in long time it can make watery eyes,change from white to red colour and the make our normal eyes be minus,the last it can make us have headache,cause our  brain must be use nonstop if  we have so many kinds of works,many kinds of task must  be done so it's not impossible that can make us be stress. and if we use pc/laptop in long time make our body in particular our back fell sick. because excedingly long we bowing. we are certain forget to the times if in front of the pc/laptop, so we don't realized so many times we use if too late in front of the pc/laptop.