Laptop and Portable Devices

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Laptop and Portable Devices
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Use of Laptops

• Small size and design
• Portable size and battery
• What are todays common uses?
• ??

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Other Portable Devices

• PDAs organizer, apps
• Smart phones phone, camera, apps.

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Laptop Components

• Ports
• USD
• S video
• Sound
• Network
• Video
• Cards more later
• Ventilation

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Laptop Components

• Optical Drive
• Battery
• Hard Drive access panel
• Ram Access Panel
• Doc Station connection
• Display

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LCD Displays

• Matrix made of columns and rows
• Passive the display is created at one time
• Active Matrix a single pixel can be changed

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Passive matrix

• Color super-twist nematic (CSTN)
• Dual Scan
• Ferroelectric
• High-Performance Addressing (HPA)
• Usually cant run projectors or LCD panels from
  these types of laptops

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Active matrix

• Metal-insulator-metal (MIM)
• Plasma-addressed liquid crystal (PALC)
• Thin-film transistors (TFT)

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Display resolutions

• XGA Extended graphics 1024x768
• SXGA - Super XGA 1400x1050
• 14-15 inch display typically max resolution
  for projectors
• UXGA Ultra XGA 1600x1200
• WUXGA Wide screen 1920x1200

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Docking stations

• Port Replicator cheapest
• Docking station difference is network access
• Cold docking laptop is off
• Warm docking laptop must be put in suspend mode
  
• Hot docking a change can be made while running
  normal operations.

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Batteries

• Nickel-cadmium (NiCad) least preferable must be
  charged every 3-4 hours
• Nickel-metal hydride (NiMH) store up to 50
  more power and dont suffer loss of functionality
  from partial draining and recharging
• Lithium ion (Lion) Lightweight and long life
  more expensive
• Fuel cell -

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Batteries cont.

• Fuel cell Casio plans to produce a hydrogen
  fuel cell that will last 20 hours. High price.

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Battery Disposal

• Dont put in mutilate
• Dont crush, puncture, or incinerate or short
  external circuits
• Dont short-circuit can cause burns

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PCMCIA Cards

• Expansion cards for
• Type III or Type II or Type I devices
• Type I 3.3 mm thick Usually used for memory
• Type II 5.5 mm thick - most common NICs
• Will work with Type 1
• Type III 10.5 mm thick - used for drive not
  common
• Both Type I, II, III can be used in a III slot

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• Today new technology called CardBus
• Mini PCI slot wireless
• 32-bit bus
• Operates at 32MHz
• 3.3 volts
• Uses type III, II, I
• Most designs have only two Type II slots
• You can plug in two Type I or type II or One Type
  III

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Ports and Communication Connections

• Bluetooth - how mobile phones, computers, and
  personal digital assistants ( PDA s) can be
  easily interconnected using a short-range
  wireless connection
• Infrared line of site - used for short- and
  medium-range communications and control.
• WAN
• WiFI wireless network.
• Cellular -

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Pointing and Input Devices

• Touchpad's, point sticks, and track points
• Digitizer pen
• Fn function key -

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Power Management

• Know how to access
• XP start/control panel/power options
• Advanced configuration Power Interface (ACPI)
  in ACPI the BIOS provides the OS with necessary
  methods of controlling the hardware.

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Three main state of power management

• Hibernate saves all contents of memory to the
  hard drive and preserves all data/applications
  where they are.
• Standby leaves memory active but saves
  everything to disk.
• Suspend same as hibernate. In XP hibernate is
  used instead of Suspend.

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Battery changing

• Know that a battery is hot-swappable but you
  either need a second battery or be plugged in to
  change.

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Common Laptop Issues

• Stylus Issues Can go bad and be replaced
• Antenna wires remove interference
• Backlight can go bad and need to be replaced.
  Know that the inverter can go bad also and be
  replaced.
• DC power replace the battery. Set to fully
  drain if possible
• External monitors usually will see when booting
  if not use the Fn key

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Common Laptop Issues

• External Keyboards replace
• Pointers can gain dust clean or use external
  mouse.
• Unneeded peripherals disable if possible they
  drain the battery
• Video incorrect settings have current drivers

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Maintenance

• Cleaning mild soap and water on a clean,
  lint-free cloth
• Make sure power is off
• Use a glass cleaner designed for monitors and a
  soft cloth.
• Clean environment
• Run Disk Defrag, Scandisk, Check Disk, and Disk
  cleanup
• Perform scheduled maintenance to prolong life

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Maintenance

• Temperature 45 to 90 degrees
• Humidity between 10 to 80 percent

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Memory

• SODIMM Small Outline DIMM
• 72 32-bit data bus
• 144- 64 bits wide
• New MicroDIMM smaller no notch
• 144-pin 32MBx64

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Memory Upgrades

• Make sure you refer to the documetation.
• Use the internet research
• Meomry problems
• Laptop not working at all
• Beep-code error
• Soft memory errors
• Short memory counts in post
• Locking up in boot

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