1. 1 Chapter Overview Types of portable computers Computer cards Portable computer hardware USB ports Batteries Power management

2. 2 Types of Portables Today’s laptops compare favorably with desktop systems in many ways. Laptop computers feature a folding liquid crystal display (LCD), a built-in keyboard, and a pointing device. Notebook computers can use docking ports to overcome limitations. Subnotebook (palmtop) computers are limited in function.

3. 3 Computer Cards

4. 4 Portable Computer Hardware

5. 5 Portable Computer Hardware (Cont.)

6. 6 USB Ports Universal serial bus (USB) ports make it easier to add new devices to portables. The hot-swap capability supports printers, scanners, and other products. PMCIA USB cards also support older portables.

7. 7 Batteries Nickel cadmium (NiCad) batteries are the oldest technology. Nickel metal hydride (NiMH) batteries are used in low-end systems. Lithium ion batteries last longer and are used in high-end systems. Lithium polymer, the newest technology, increases battery life and decreases weight. Proper battery disposal is important.

8. 8 Power Management Suspend mode Hibernate mode Advanced Power Management (APM) standard Advanced Configuration and Power Interface (ACPI) standard

9. 9 Chapter Summary Portable computers include laptops, notebooks, and subnotebooks (palmtops). Different types of PC Cards provide support for a variety of functions. Display screens for portables are either dual- scan or active-matrix. USB ports make it possible to hot swap different USB devices. Power management has two modes: suspend and hibernate.