1.3 Connecting mobile devices. Flashcards
High-speed wired communication
– Used for charging and data transfers. Used for all external devices.
Universal Serial Bus (USB)
– A smaller USB connection
– Common now worldwide.
Micro-USB
- 24-pin double-sided USB connector
– Used for both hosts and devices - Acts as a USB 2.0/3.0/3.1/4 connection
– Different signals can use the same connector - Can transmit other signals
– DisplayPort, HDMI, Thunderbolt
USB-C
Used on host controllers that are plugged into slots to provide USB connections.
Mini USB
- Apple proprietary
– 8-pin digital signals
– iPhone and iPad devices - Some advantages over Micro-USB
– Higher power output for phones and tablets
– Can be inserted either way
– Simpler design
Lightning
- DB-9 - also called DE-9
- Commonly used for RS-232 signals
– Recommended Standard 232
– An industry standard since 1969 - Serial communications standard
– Traditionally used for modem connections - Now used as a configuration port
– Switches, routers, firewalls, etc
– Use a USB to DB-9 converter cable
Serial interfaces
Send small amounts of data wirelessly
over a limited area
* Built into your phone
– Payment systems, transportation,in-person
information exchange
* Access token, identity “card”
– Short range with encryption support
Near field Communication (NFC).
- High speed communication over short distances
– PAN (Personal Area Network) - Connects our mobile devices
– Smartphones
– Tethering
– Headsets and headphones
– Health monitors
– Automobile and phone integration
– Smartwatches
– External speakers
Bluetooth
Your own personal wireless router
– Extend the cellular data network
to all of your devices
* Dependent on phone type and provider
– May require additional charges and data costs
Hotspot
– Activate the interface without actually touching it
* Handwriting
– Note taking, signatures
* Precise selection
– Easier to see the screen
Touch pens
- Hands-free audio - Earphones and microphone
- Wired
– USB connections are common on laptops
– Connects to 3.5 mm
TRRS (tip-ring-ring-sleeve) connector
– Analog audio jack
– iPhone can use Lightning port - Wireless
Headsets
Internal or external
– Commonly external on desktops,
internal on laptops/tablets/phones
* Accessible from multimedia applications,
photo utilities,and video conferencing
– Real-time video communication
webcam
- Mobile audio - Battery powered
- Wireless connection - Bluetooth link. Can also be connected by USB.
- Stereo sound - Small package
Speakers
– Use external keyboard and mouse
– Extend existing laptop interfaces
– Add additional functionality
– Desktop adapter cards
– Avoid cable issues
Docking station
– Similar to a docking station (cheaper version)
– Does not commonly have an expansion card option
– Usually connects using USB
Port replicator
