Atpresent,thetechnologiesaredevelopingmoreandmorefast.Technologieshavebecomeanimportantpartinourdailylife.Itnotonlybringsusup-to-dateinformation,butalsoitmakesourlifemoreconvenient.suchascomputers,wecansurftheInternetforinformation,watchfilmsonline,shoppingonline.wecandoanythingwecanimagine.