about one of the various technology

1. Technical Presentation
s1240068 Yuta Kurihara

2. At first
• People came to possess a
PC.
• There are many data in a file.

3. File date
• write text or record movie.
• save text or movie.
• create file.

4. Deleted File
• I sometimes delete File in my
computer.
• It maintain the ability of the
PC.

5. • I don’t know it.
• I think that it is right.
Is a Deleted File Really
Gone?

6. Reason
• I can’t recover until now.
• I think that it is impossible.

7. Challenge
• use date recover software.
• I try to recover file.

8. Experimental Procedure(1)
• You prepare PC.
• You create a file in PC.

9. Experimental Procedure(2)
• You send the file to trash.
• You empty trash.

10. Experimental Procedure(3)
• You download it if you
don’t have recover
software.
• You use it.

11. Result
• can recover file.

12. conclusion(1)
• You can recover file
if you use recovery
software.

13. conclusion(2)
• You must destroy your
PC or hard disk when
you want to completely
delete data.

14. crisis
• There is the risk that the
file which I deleted is
recovered by another
person

15. Finally
• It is important that you
protect your information
by yourself.