Bài giảng Computer - Chapter 13

Chapter Overview Types of portable computersComputer cardsPortable computer hardwareUSB portsBatteriesPower management 1Types 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. 2Computer Cards 3Portable Computer Hardware 4Portable Computer Hardware (Cont.) 5USB 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. 6Batteries 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. 7Power Management Suspend modeHibernate modeAdvanced Power Management (APM) standardAdvanced Configuration and Power Interface (ACPI) standard 8Chapter 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. 9