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2.1 MOBILE DEVICE - Coggle Diagram
2.1 MOBILE DEVICE
Compare Desktop and Laptop motherboards
Laptop motherboard
Expansion slot types include: MINI-PCI
RAM Slot types include: Small Outline In-line Memory Modules(SODIMMs) to accommodate space restrictions
LAPTOP COMPONENTS
•Laptop CPU
-designed to use less power and create less heat than desktop processor
-do not require large cooling devices
-use CPU throttling to modify the clock speed to reduce power consumption
-allow a laptop to operate longer using a battery
Monitor,Fn key, and Function keys through F12
•a laptop monitor is a built-in LCD.A desktop monitor can added
•Fn key is used to activate second function:
•volume setting
•sleep state
•display brightness
•check battery status
Port replicator
-may contain an SCSI port, networking port, PS/2 Port, USB ports, and game port
Docking station
:
•eject button
-a lever that releases the laptop from docking station
• power button
-turns on/off laptop when it attached to docking station
rear view of docking station
1.exhaust vent
-to expelled hot air from the interior of docking station
AC power connector
-to connect to AC power adapter to docking station
Ethernet port
-connect to cabled local area network
4.RJ-11 modem port
-to cenct the laptop to standard telephone line
5.PC card slot
-supports PC express expansion card
6.Serial port
-connect a device such as mouse or trackball
VGA port
-15 socket that allows out put to external displays and projectors
8.Parallel port
-socket to connect device such as printer or scanner
External diskettes drive connector
-to connect to an external disk drive
Headphone connector
-to connecto to a headphone
LIne in socket
-socket to connect to audio source
12.USB (Universal Serial Bus)
-to connecto one or more peripherals
13.Keyboard,mouse port/PS2 socket
-used to attach external keyboard,mouse
Right side view of docking station
the key lock is a socket into which a key is inserted to lock the laptop onto the docking station
Laptop Display Types
LCD- Liquid Crystal Display
LED -Light Emitting Diode
OLED -Organic LED
Plasma
Backlight, Inverters and Wi-FI Antenna
The inverters converts DC power to the higher voltage AC power that is required by the backlight.
The Backlight shines through the screen and illuminates the display.
-Two common types of backlights are cold cathode fluorescent lamp (CCFL) and LED.
-Cold cathode fluorescent lamp (CCFL) are used in LCD monitors
Wi-Fi antennas transmit and receive data carried out over wireless signals. Wi-Fi antennas in laptops are typically located above the screen,
Configure Laptop Power Setiing
The Advanced Configuration and Power Interface (ACPI) standards create a bridge between the hardware and OS and allow echnicians to create power management schemes to get the best performance from the computer.
The ACPI standards are applicable to most computers, but they are particularly important when managing power in laptops.
ACPI Standards
S0: Working or Awake
-system is fully powered and operational
S1: Power on Standby
-CPU stops executing instructions,CPU & RAM remain powered
S2:CPU off
-CPU powered off
-RAM remain powered
S3: Standby or Sleep
-CPU & RAM received low power
-system content storedin RAM
S4:Hibernation
-system save content in hard drive
-power off all hardware
S5: Shutdown
-computer is off
Laptop Communication Method
Bluetooth
-A short range wireless technology designed to eliminate the need for portable and fixed-configuration devices
-operates at 2.4 & 2.485 GHz in the unlicensed Industrial, Scientific & Medical band
-low power,low cost and small size
-use adaptive frequency hopping
-version 1.2 operates up to 1.2 Mbps
-version 2.0 + Enhanced Data Rate (EDR) operated up to 3 Mbps
-version 3.0 + High Speed (HS) operates at up to 24 Mbps
Infrared
-A short range,low throughput wireless technology used to as a data transmission medium
-Infrared light signals operate in the lowest light frequency
-Distance are limited to few feet or meters
-IR cannot penetrate any object that blocks the light signals
Types of IR networks:
-Line of sight:
The signal is transmitted only if there is a clear, unobstructed view between devices
-Scatter:
The signal is bounced of ceilings and walls
-Reflective:
The signal is sent to an optical transceiver and is redirected to the receiving device
Cellular WAN
-to connect a laptop to a cellular WAN,an adapter installed to work with cellular networks
-Cellular WAN card are plug-and-pay
-can be plugged to the PC card slot or is built in to the laptop
-can be access using USB adapter or mobile hot spot
-laptops are intergrated with cellular WAN capabilities require no software installation adn no additional antenna or accessories
Wi-FI
A wireless technology that provides a simple connection from anywhere wtihin the range of abse station
-connection distances of 300 feet (91meters) or more,depending on the enviroment
-ease of access makes WiFi a simple solution for network connectivitty
Laptops access the internet by using the wireless adapters
-Mini-PCI: commonly used by older laptops.Mini PCI cards have 124 pins and are capable of 802.11a, 802.11b and 802.11g wireless LAN connection standards
-Mini-PCIe: most common type of wireless card in laptops. Mini-PCIe cards have 54 pins suprt all wireless LAN satndards
-PCI Express Micro - commonly found in newer and smaller laptops,such as Ultrabooks, because they are half the size of Mini-PCIe cards
Desktop motherboard
Form Factors include: AT, LPX ,NLX ,ATX and BTX
Expansion slot types include: PCI, PCIe, ISA & AGP
RAM slot types include: SIMM, DIMM & RIMM
Virtual Laptop
•stand alone tool
•provide hands on experience in learning
environment where equipment is limited
2.Virtual laptop
•portable device
•compact design
• keyboard, screen, internal component
in a small case
common use
•taking notes
•presenting information
•accesing data
•playing games
Top view of a laptop
•Bluetooth status LED
-indicates when the Bluetooth is enabled
•Battery status LED
-indicates the condition of the battery
•Standby LED
-power status of the laptop
-reduces the amount of electricity used
by laptop
-shuts off monitor,hard drive and CPU
-small amount of power used to keep the
RAM active
Rear view of a laptop
•Battery bay
-connector thats used to attach a laptop battery
•AC power connector
-a connector used to attach the
AC power adapter to the laptop to
charge of the batter
•Parallel port
-a socket thats used to connect a device such as printer or scanner
Left side view of a laptop
•Security keyhole
-used to attach a security cable
•USB port
-used to connect one or more peripherals
•S-video port
-four mini DIN connector
-to send video signals to a
compatible device
-separates the brightness and color portions
of a video signals
•Ethernet port/RJ-45
-to connect laptop to cabled local
area network
•Network LED
-indicates the laptop network status
-green lighteans network connectivity
-outer LED light indicates the traffic to and from
the laptop
Left side view of a laptop
•Headphone jack
-socket used to output audio signals to connected
stereo headphones or speaker
•microphone jack
-socket used to connect a microphone used ofr audio input
•ventilation grill
-series of vents that allow hot air to be expelled from the interior of laptop
•PC card slot
-expansion slot that supports PCExpress expansion cards in the top slot and PC card
LEDs inside laptop
•Wireless LED
-indicates the activity of wireless network
• Bluetooth status LED
-indicates when the Bluetooth is enabled
•num lock LED
-indicates on/off status of 10key number pad
•caps lock LED
-indicates on/off of caps lock
•hard drive LED
-indicates the activity of the hard drive
•power on LED
-indicates on/off of the laptop
•battery status LED
-indicates the condition of the laptop battery
Front view of a laptop
•infrared port
line-of-sight wireless transceiver thats used for data transmission
•speakers
-an output device that converts audio signals that are produced within the laptop to sound
•laptop latch
-a lever thats used to open the laptop lid
Right side view of a laptop
•optical drive
-disk drive that's used to read and write CD and DVD
•optical drive indicator
-LED that illuminates when the drive is in use
•Drive bay indicator
-LED that illuminates when a drive is installed
•VGA port
-15 pin socket that connects to external display and projector
Underside view of a laptop
•Battery latches
-used when inserting, removing or securing the laptop battery
•Hard drive access panel
-a cover that provides access to internal hard drive bay
•Docking connector
-a socket tahts used to attch laptop to a docking station
•RAM access panel
-a cover that provides access to the expansion memory
Open view of a laptop
•Keyboard
-compact input device,multi-functional keys
•Volume controls
-buttons that control audio input
•input devices
-touch pad
-right & left click buttons
-pointer controller
•power button
-turns the laptop on&off
•fingerprint reader
-an input device used for security authentication
