advantage：1 process information at once
2 It can help categorize information in a systematic matter so that we can find what we need instantly
3 No longer is there a need for us to look for a book shelf by shelf in a library; with a click of a mouse,we can search for the look on a computer.
shortcomings ：1 our overreliance on computer may result in a decline in our mental capability.Instead of calculating data using our brain
2 students lost himself because they are playing computer
3 someone is injuried that in the Internet