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Chapter 6: Fundamental Laptops and Portable Devices 7Figure 6-2Laptop: Rear ViewBattery BayAC Power ConnectorParallel PortA laptop operates using a battery or an AC power adapter. Laptop batteries are manufacturedin various shapes and sizes. They use different types of chemicals and metals to storepower.Table 6-1 compares rechargeable batteries typically used in laptops.Table 6-1Laptop Battery ComparisonType of Battery Characteristics Common Use DisposalLithium-ion (Li-ion) Lightweight for power, Cell phones, Check local rules,no memory effect, can laptops contentseasily overheat andflammablesometimes explode.Keep cool, chargeoften, seek freshestbatteries (most recentlymanufactured).Lithium-polymer Costly, small, PDAs, laptop Check local rules(Li-Poly or LiPo) lightweight for power, computers,moderate capacity, portable MP3fast recharge, moderate players, portablelife span, do not short- gaming devices,circuit, can explode but radio controlledare not flammable. airplanesThe left side of the laptop, shown in Figure 6-3, has the following ten components:■■■■■■Security keyholeUSB portS-video connectorModemEthernet portNetwork LEDs
8 IT Essentials: PC Harware and Software Companion Guide■Stereo headphone jack■■■Microphone jackVentilationPC combo expansion slotFigure 6-3Laptop: Left-Side ViewSecurity Keyhole Headphone JackSecurity Keyhole Ethernet Port VentilationUSB Ports Network LEDsExpansion SlotRJ-11 Modem Port Microphone JackThe front of the laptop, shown in Figure 6-4, has the following components:■■■■Infrared portSpeakersLaptop latchVentilationFigure 6-4Laptop: Front ViewInfared PortLaptop LatchSpeakersVentilationThe right side of the laptop, shown in Figure 6-5, contains four components:■■■■Optical driveOptical drive status indicatorDrive bay status indicatorVideo Graphics Array (VGA) port
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iiiTrademark AcknowledgmentsAll ter
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vAbout the Technical ReviewersDavid
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ixIdentify the Names, Purposes, and
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CHAPTER 1Introduction to the Person
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CHAPTER 5Fundamental Operating Syst
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CHAPTER 13Advanced Laptops and Port
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CHAPTER 14Advanced Printers and Sca
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CHAPTER 15Advanced NetworksObjectiv
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GlossaryThis glossary defines many
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ase station 3AppleTalk A protocol s
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CMOS battery 5bus topology A networ
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desktop computer 7crosstalk Interfe
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dynamic routing 9Domain Name System
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floppy data cable 11FFast Ethernet
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IEEE 802.11 13Hardware Compatibilit
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Regedit 23Printer Control Language
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three-claw part retriever 27surge s
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virtual memory 29Uninterruptible Po
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zero insertion force (ZIF) socket 3
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