Transcript Laptop and Portable Devices

Laptop and Portable Devices
Use of Laptops
 Small size and design
 Portable – size and battery
 What are today’s common uses?
 ??
Other Portable Devices
 PDAs – organizer, apps
 Smart phones – phone, camera, apps.
Laptop Components
 Ports







USD
S video
Sound
Network
Video
Cards – more later
Ventilation
Laptop Components
 Optical Drive
 Battery
 Hard Drive access panel
 Ram Access Panel
 Doc Station connection
 Display
LCD Displays
 Matrix – made of columns and rows
 Passive – the display is created at one time
 Active Matrix – a single pixel can be changed
Passive matrix
 Color super-twist nematic (CSTN)
 Dual Scan
 Ferroelectric
 High-Performance Addressing (HPA)
 Usually can’t run projectors or LCD panels
from these types of laptops
Active matrix
 Metal-insulator-metal (MIM)
 Plasma-addressed liquid crystal (PALC)
 Thin-film transistors (TFT)
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
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.
Batteries
 Nickel-cadmium (NiCad) least preferable
must be charged every 3-4 hours
 Nickel-metal hydride (NiMH) – store up to
50% more power and don’t suffer loss of
functionality from partial draining and
recharging
 Lithium ion (Lion) – Lightweight and long life
– more expensive
 Fuel cell -
Batteries cont.
 Fuel cell – Casio plans to produce a
hydrogen fuel cell that will last 20 hours. High
price.
Battery Disposal
 Don’t put in mutilate
 Don’t crush, puncture, or incinerate or short
external circuits
 Don’t short-circuit – can cause burns
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
 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
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 -
Pointing and Input Devices
 Touchpad's, point sticks, and track points
 Digitizer – pen
 Fn – function key -
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.
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.
Battery changing
 Know that a battery is hot-swappable but you
either need a second battery or be plugged in
to change.
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
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
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
Maintenance
 Temperature – 45 to 90 degrees
 Humidity – between 10 to 80 percent
Memory
 SODIMM – Small Outline DIMM



72 – 32-bit data bus
144- 64 bits wide
New MicroDIMM – smaller no notch –

144-pin 32MBx64
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