Laptop and Portable Devices

Use of Laptops Small size and design Portable – size and battery What are todays 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 cant 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 – 1400x 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 dont 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 Dont put in mutilate Dont crush, puncture, or incinerate or short external circuits Dont 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 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