1. You can use the middle mouse buttons to open new ie pages and new resource manager pages. 2. Multiple page windows are displayed on the desktop. You can hold the title of the current page and shake it. Other windows will be reduced to the taskbar. perform this operation again to restore it. 3. Drag a window to the top to maximize the window. 4. The win key and four direction keys can be used to easily control the layout of the current window. 5. When you start the aero peek function on the taskbar and move the cursor to the rightmost "show desktop" button on the taskbar, the desktop icon is temporarily minimized. 6. The "display desktop" button on the win7 taskbar is located at the rightmost end of the taskbar. 7. copy the file to the USB flash drive in win7, and the copy progress will be displayed on the taskbar. 8. You can set the desktop background to use multiple images, and set the switching time for multiple images. 9. Projection Function: You can use win + P to switch the projection mode. 10. Book subscription function: this function can be used to pin a specific program to the taskbar or a certain position. You can also use the book subscription function to customize the taskbar. 11. Use jumplist to quickly access frequently used files and programs. (Drag the taskbar icon up) or right-click an icon in the taskbar. 12. The dashboard can be recorded using the PSR (problem step recorder. 13. UAC has changed to four levels, not the previous only two levels. 14. The page is changed from a small screen preview of Vista to a small screen + full screen preview under win7. 15. bitlocker can be used to encrypt all disk partitions and even USB flash disks. 16. You can use the Group Policy to disable the USB flash disk or enable only the specified USB flash disk. 17. device and printer: here you can see the appearance of the specific device (must pass the Microsoft logo certification) 18. application Control enhanced security and control: Through applocker, you can control installed applications and implement unified group policies. 19. Accelerator function of IE8. 20. better compatibility: The program compatibility troubleshooting tool in win7 allows you to easily update applications and device drivers to improve overall system compatibility.