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laptoplaptop

Portable Computers

What to look for when purchasing a laptop?
Weight, Screen size, color support, Batteries, PC card support and Features (color, style, moving around, price, support)

Laptop Power Management:
APM
(Advance Power Management)
APCI
(Advance Power Configuration Interface)

Types of Portable Computer Displays


hp



LCD - Liquid Crystal Display uses TFT Thin Film Transistor Technology
Active Matrix is clear and you can see it in any angle vs. Passive Matrix found on older notebooks


LED – Light Emitting Diode

OLED – Organic Light Emitting Diode


Video Standards for laptops:

Resolution and Horizontal and Vertical Ratios


XGA Extended Graphics Array 800 x 600 4:3 or 1024 x 768 4:3
SXGA Super XGA 1400 x 1050 4:3
UXGA Ultra XGA 1600 x 1200 4:3
WUXGA Widescreen Ultra XGA 1920 x 1200 16:10


How to move around

Touch pad, Serial Mouse, PS/2 Mouse, Wireless\Bluetooth, Infrared Mouse, USB Mouse, Eraser/Pointer stick & Trackball
Fn Keys  and Ports – Function Keys. Audio/Video Ports, USB, Firewire, Display, Wireless, RJ45, HDMI, and VGA ports
Special Keys – Dual Displays, Wireless on/off, Volume, Brightness, Bluetooth on/off and Keyboard backlight

Batteries

Nickel Cadmium Ni-CD first battery ever used in mobile PC no smart recharging must wait before PC is drained before you can recharge (memory effect)  also battery did not last as long and when removing must clean corrosion in order for new battery to work.  

Nickel Metal Hydride Ni-MH
a little better than the Ni-CD but has the same problems stated above

Lithium Ion
are completely immune to memory problems can recharge on the fly and lasts longer will not explode if overcharge this should be the battery you will need for your laptop

Docking Stations - A docking station lets you connect many devices to a portable at once

docking station

Port Replicator – A device to connect a laptop to replicate ports to connect peripherals

PCMCIA Cards or Card Bus of the newest cards Express Cards
(16, 32
and 64bit)

Type I                    
3.3mm                   
Flash Memory

Type II                   
5.0mm                   
NIC/Modem/USB/Firewire

Type III                   
10.5mm                 
Hard Drive

Express Card /34mm and /54mm

Laptop components

LCD screen, case, keyboard, hard drive (SATA/PATA), memory, optical drive, wireless card, mini PCIe, DC jack, battery, touchpad, speakers, motherboard and CPU


laptop



Memory components

so dimmSO DIMM       

micro dimm MicroDIMM

Cooling Fans – Use to cool portable computers

laptop cooling

Security – Physical Laptop lock, laptop cable locks, LoJack, Find my iPhone/iPAD, Insurance and Warranty

Laptop Components that you usually do not mess with include Display, CPU and Motherboard

Laptop Components use replace are batteries, AC Charger, Memory, Storage, Optical, CMOS battery, Card Bus and Networking

Troubleshooting laptops

No display
Dim display
Flickering display
Sticky keys
Battery issues
Ghost cursor
No power
Num Lock indicator lights
No wireless
No Bluetooth connectivity
Cannot display to external monitor

Tools

Document and label cable and screws
Organize parts
Manufacturer documentation
Use proper tools


 

top10computercertifications2010


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