Mobile Devices

Question 1

capacitive touch screen

Answer 1

works by seeing distortion in an electrostatic field
- one touch at time

Question 2

multi-touch screen

Answer 2

process two or more touch points

Question 3

LCD

Answer 3

uses liquid crystal where properties change with application of voltage

Question 4

thin film transistor

Answer 4

LCD panel
- twisted nematic (low end devices/old/fast response)
- in plane switching (rotate crystals/better color)
- vertical alignment (crystals tilt/ wide color palette)

Question 5

LED

Answer 5

newer form of light that uses direct current
- less power/longer battery life

Question 6

OLED

Answer 6

each pixel has its own separate LED that provides light
- thinner/lighter/made from plastic/less bright

Question 7

digitizer

Answer 7

layer sandwiched between protective glass and display
- haptic feedback

Question 8

GSM
- global system for mobile communication

Answer 8

• cell tech that takes voice during call and converts to digital format
• SIM card

Question 9

cdma
- code dision multiple access

Answer 9

• uses code division to split up the channel
• more powerful and flexible
• electronic code

Question 10

port replicator

Answer 10

port mirror of all ports on laptop

Question 11

docking station

Answer 11

additional ports
- more capability