Karteikarten
A+ 220-1001: Mobile Devices and basic terminology
Karten in diesem Stapel (36)
- 1Acronym Check SSDSolid-state drive
- 2Solid State Drive (SSD) characteristics•All memory
•No moving parts
• Silent
•Fast access time, less latency (vs HDD) - 3Acronym Check SSHDSolid State Hybrid Drive
- 4Solid State Drive (SSD) Form factors2.5 inch (most common) and 1.8 inch (older machines)
- 5Solid State Hybrid Drive (SSHD) characteristics• Flash memory and hard drive storage
• SSD caches the hard drive data
• Less risk of physical shock - 6Acronym Check HDDHard Disk Drive
- 7Hard Disk Drive (HDD) characteristics•Traditional spinning drive platters
•Relies on magnetic storage
•Vulnerable to physical shock - 8Acronym Check rpmrotations per minute
- 9Acronym Check / Define SO-DIMMSmall Outline Dual In-line Memory
Memory used in laptops and mobile devices - 10Acronym Check / Define Micro-DIMMMicro-Dual In-line Memory Module
Memory used in laptops and mobile devices - 11Smart Card ReaderIntegrated or external USB card reader
used in high security environments, authenticates users to the network - 12Acronym Check ODDOptical Disk Drive
- 13Optical Disk Drive (ODD) characteristics•Read and write:
CD-RW/CD-ROM and DVD-RW/DVD-ROM
• Too big for newer devices, hard to find
•Removable- can be replaced with seperate storage drive/other component - 14Video Cards• Often built into the CPU of mobile devices
• Sometimes part of the system board (as with desktops)
• Typically not upgradable
(upgrade exception: larger devices requiring high-end graphics capabilities) - 15Acronym Check / Define LCDLiquid Crystal Display
• Screen/Display in which light shines through liquid crystals.
• Used for both desktops and laptops
• Light and high-resolution
• Resolutions are fixed - 16Liquid Crystal Display (LCD) Advantages• Lightweight
• Relatively low power
• Relatively inexpensive - 17Liquid Crystal Display (LCD) Disadvantages• Black levels are a challenge
• Requires separate backlight
(Difficult to replace)
• Very fragile
• Changes to native resolution may look
blurry or not as crisp - 18Laptop Power: AC adapters• External power supply
May be:
• Fixed input-specific to power supply type
• Auto-switching for other power systems
• Converts AC to DC (jack on the laptop)
• Input voltage -110 volts / 220 volts - 19Laptop power: Batteries• Lithium Ion (Li-ion)
• No “memory effect”- do not need to drain before recharging.
• Charging the battery diminishes capacity over time. - 20Laptop Motherboards / system boards• Proprietary / built to fit each device
• Replacement is a challenge- must swap the entire board
• Most components are on the system board - 21Acronym Check / Define CPU• The primary component of a computer that processes instructions.
• Contains at least one processor (chip) that performs calculations. - 22Laptop CPU vs. Desktop CPU• Designed for mobility/power mgmt
• low power drain / low heat output
• Integrated features
• Memory controller, video controller
• Not very upgradable
• Replaceable, but not upgradeable
• Often slower than desktops
• Size and heat are disadvantages - 23Acronym Check OLEDOrganic Light Emitting Diode
- 24Organic Light Emitting Diode (OLED) advantages vs. LCD• No backlight required, organic compound receives electric current and emits light
• Thin / light / flexible / mobile / no glass - 25Organic Light Emitting Diode (OLED) disadvantages vs. LCD• Not quite ready for laptops
• Organic materials degrade over time
• Decayed images may remain on screen
• More costly and power hungry than LCD - 26Laptop Antennas type and locationTypes:
1. Wi-Fi main
2. Auxiliary connections
3. Bluetooth
4. Cellular type connections
Locations:
Wrap around screen to highest point on device - 27Laptop webcam components /requirements• Video capture
•Built-in camera and microphone
Requires specialized drivers and software - 28Acronym Check CCFLCold Cathode Fluorescent Lamp
- 29Acronym Check LEDLight Emitting Diode
- 30Backlighting: Cold Cathode Fluorescent Lamp (CCFL) vs. Light Emitting Diode (LED)CCFL's:
• Requires higher voltage and power
• Adds thickness to the display
• No longer a common backlight - 31Troubleshooting: LCD screen goes dark-Shine flashlight on screen:
-If info is detected, the backlights have stopped working
-If older machine with CCFL backlights, check for inverter fail (inverts DC to AC)
-If LED, consider display replacement - 32DigitizerDisplay that provides touchpad support or stylus use
- 33Dual Display LCD Switch / “refrigerator door” effectDoes you laptop remain useable or go into suspend mode when closed?
Function controlled by:
•Physical switch on (older sys)
• Internal magnetic switch (newer)
Set functionality - in the BIOS or utility - 34Dual Display connections (laptop)HDMI or VGA
- 35Acronym check HDMIHigh-Definition Multimedia Interface
- 36Acronym check VGAVideo Graphics Array