1.0 - Mobile Devices Flashcards
- SSD
Does it move
Connected via…
Does it make sound
Fast or slow
(Solid-state drive)
– All memory, no moving parts
– Silent, fast access time, less latency
– 2.5 inch form factors
- connected with Sata cable
M.2
Where is it located
Smaller the ssd
M.2 is a slot on the motherboard
– Smaller form factor
– No SATA data or power cables
– Easy to install and replace
how is a keyboard connected
A few screws and a single ribbon cable
connect an external USB keyboard
SO-DIMM
Where is it located
It’s a type of___
- Small Outline Dual In-line Memory Module
- Memory used in laptops and mobile devices
- easily inserted into the memory slot on the motherboard
- It is a type of RAM
A hard drive is a ___ and ___disk
It’s size in laptop vs desktop
Does it spin
They store ____
Magnetic disk
– Traditional spinning drive platters
– 2.5 form factors (3.5 inch for desktops)
How do you replace a Hard Drive, SSD, and M.2
- All internal
– Open a cover on the back
– Open the entire laptop - Can be very modular
– Two screws and the drive slides out - M.2 drives are even easier
– One screw - similar to RAM installation
What are the 2 ways of
Migrating from HDD to SSD
- Install an OS on the SSD
– Move user documents between drives
– Install any required applications
– Can be time consuming - Image/clone the HDD
– No OS installation required
– Move everything from one to the other - Imaging software needed
– Sometimes included with the SSD
– Many commercial and open source options
802.11
What is LAN
– Local area network (LAN)
– High speed, Internet access
Bluetooth
PAN
– Personal area network (PAN) - Short range
– Connect peripherals and other nearby devices
what is NFC
Near-field communication (NFC)
* Short-distance networking
– 4 centimeters or less
– Data transfers or authentication
What is LCD
- Liquid crystal display
– Light shines through liquid crystals
Advantages and disadvantages of LCD
- Advantages
– Lightweight
– Relatively low power
– Relatively inexpensive - Disadvantages
– Black levels are a challenge
– Requires separate backlight
– Florescent, LED, etc.
– Lights are difficult to replace
- TN (Twisted Nematic) LCD
Is it fast
How are the viewing angles in regards to color
– The original LCD technology
– Fast response times (gaming!)
– Poor viewing angles - color shifts
- IPS (In Plane Switching) LCD
How is the color
It’s more expensive then what
– Excellent color representation
– More expensive to produce than TN
- VA (Vertical Alignment) LCD
How fast is it
Is it a compromise
– A good compromise between TN and IPS
– Good color representation
– Slower response times than TN
What is OLED
Does it have glass
Does it need a backlight
How is the color
Is it expensive
- Organic Light Emitting Diode
– Organic compound emits light when
receiving an electric current - Thinner and lighter
– Flexible and mobile - no glass needed - No backlight
– The organic compound provides the light - Tablets, phones, smart watches
– Very accurate color representation
– A bit higher cost than LCD
Where are WIFI Atenas located
- Multiple antennas
– WiFi main and aux / Bluetooth - Antenna wires wrap around the laptop screen
– It’s up high!
What is CCFL backlight
Does it require a lot of power
Is it a thinner or thicker display
Is it common
Cold Cathode Fluorescent Lamp
A display backlight
– Higher voltage and power needed
– Added thickness to the display
– No longer a common backlight
– Older laptops will use these
what is * LED
Light Emitting Diode
– Backlight is LEDs instead of florescent
– LEDs around the edge of the screen
– An array of LEDs behind the screen
– The latest laptops are LED-backlit
what is an inverter
Turn DC into AC for the backlight
Digitizer
- Use a pen-like device as input
– Stylus input - Useful for graphical input
USB
- Universal Serial Bus
– High-speed wired communication
– Used for charging and data transfers
- Micro-USB
– A smaller USB connection
– Common now worldwide
* Older devices may use Mini-USB
– Slightly larger
how many pins in a USB-C
- 24-pin double-sided
