（翻译）1.Four common storage devices are a floppy disk drive, a hard disk drive, a CD-ROM drive, and a DVD-ROM drive.
2.Four commonly used input devices are the keyboard, the mouse, a microphone, and a PC camera.
3.An optical scanner reads printed text and graphics and then translates the results into a form computer can use.
4.Resolution typically is measured in dots per inch (dpi), and is stated as the number of columns and rows of dots..
5. Display devices include CRT monitors, flat-panel displays.
(翻译)1．SQL Server is designed to allow thousands of users to access the database at the same time and is a true client/server database system.
2．An application software is any program designed to perform a specific function directly for the user or, in some cases, for another application program.
3．A small network may only connect two computers inside a home to share a single printer and Internet connection
4．There is free firewall software available that can run on your computer and provide a good level of protection to your network.
