2. Windows Update A Brief History of Windows & Personal Computing

4.  Why do Windows users need to update their operating system?  How many ways are there to get our Windows updated?  Where can we change the update settings in Windows 7?

6. The four options decide when and how updates will be delivered to your computer. Deliver the mail Deliver the project Deliver the mail Deliver the project

7. Windows finds and downloads updates in the background. …behind the scene 在后 台 … 1.The user will not be notified or interrupted… 2. The updates do not interfere with other downloads.

8. the default schedule… 3 A.M.

9. You are never notified or interrupted when you select Automatic Update mode. or 1. To accept an End User License Agreement. 2. To restart the computer.

12. 1. Updates will be downloaded automatically. 2. The Windows Update icon appears in the notification area. 3. An alert pops up. 4. Click the icon/alert to install the updates.

13. To receive alerts, you must be a member of the Administer group for you computer. User Accounts 用户账户 User Groups 用户组 Administrator privileges 管理员权限

14. The Notification Area … also sometimes called the system tray (or just tray). Many of the programs running in the background have tray icons here that you can use to open their window or to configure them.

15. Updates will be downloaded and installed manually. 1. Windows checks for updates on the Internet. 2. Windows notifies the user. [icon] [alert] 3. The user decides to download updates. 4. Downloading is complete… Windows notifies the user. [icon] [alert] 5. The user can choose to install the updates.

16. You will never be notified to download or install updates. Your computer will be vulnerable to viruses and security threats. Viruses can spread over the Internet. 1.Exchange e-mail. 2.Share files 3.Collaborate on a network

17. Protecting your computer is an ongoing process. New viruses and security threats are continually developed.

18. Modes When to notify users download mode Installation mode Automatic during installation (not always) Automatically Download for me… Before installation Automaticallyon request Notify me… Before download Before installation On request Turn off Automatic NeverManually

19. It is strongly recommended that —— you log out of the administrator account when you are not performing tasks that require administrator privileges. 退出 … Log off 注销 退出 … Log off 注销 管理员账户 管理员权限

20. Administrator 1.Administrator privileges 2.Make system-wide changes 3.Reformat your hard disk 4.Delete all your files Administrator 1.Administrator privileges 2.Make system-wide changes 3.Reformat your hard disk 4.Delete all your files Limited User 1.Limited privileges 2.Better security Limited User 1.Limited privileges 2.Better security

22. 256KB RAM1GB RAM 2 floppy drives （ 2.8MB ） 160GB hard disk 8MHz processor2.8GHz processor 1985200622 years 3900 times 57100 times 350 times KB=Kilobyte MB=Megabyte GB=Gigabyte 1MB=1000KB 1GB=1000MB

23. Handheld; pocket PC; PDA; Palmtop

24. Tablet PC 平板电脑

26. Windows Update A Brief History of Windows & Personal Computing

27. Thank you!