1. Introduction to Computers Lesson 1B

2. home Keyboard Primary input device for entering text and numbers

3. home Standard Keyboards Have Five Groups of Keys Alphanumeric keys Modifier keys Numeric keypad Function keys Cursor-movement keys Click to Enlarge Click to Enlarge

4. home Mouse An input device that rolls around on a flat surface and controls the pointer

5. home Pointer Also called the mouse pointer An on-screen object for selecting text; accessing menus; and interacting with programs, files, or data

6. home Other Pointing Devices Trackball Trackpad, also called a touchpad Joystick, also called an integrated pointing device, 3-D point stick, or TrackPoint

7. home Alternative Input Devices Devices for the hand Optical devices Audiovisual devices

8. home Monitors Cathode ray tube (CRT) Flat-panel. Most common flat-panel is the liquid crystal display (LCD) monitor

9. home Two Main LCD Categories Passive matrix LCD Active matrix LCD

10. home Four Things to Consider When Monitor Shopping Size Resolution Refresh rate Dot pitch

11. home Video Controller An intermediary device between the CPU and the monitor

12. home Sound Card Translates digital sounds into the electric current that is sent to the speakers

13. home Printers Impact Nonimpact

14. home Four Things to Consider When Printer Shopping Image quality, measured in dots per inch (dpi) Speed, measured in pages per minute (ppm) Initial cost Cost of operation

15. home Examples of Printers Dot matrix Ink jet Laser

16. Lesson 1B Interacting With a Computer

17. home Review Questions What are the keyboard’s five kinds of keys? What are the two kinds of monitors? What four things should you consider when monitor shopping? What four things should you consider when printer shopping?

18. The Keyboard