Chapter 18/ Mobile devices up to page 884 Flashcards
______________, is a term used to describe text that is written using the protocol of a particular programming code
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source code
open source.
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Term used to describe a program or file that can be freely modified by anyone, allowing users or organizations to adjust the program’s functionality to perform for their specific needs.
closed source.
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known as proprietary, vendor specific software
is licensed to other to used but kept within the control of the original publisher.
The google Android OS
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- Android is a Linux based platform and free and open software stack that has an operating system, middleware, and applications originally developed by Google and released in 2007 for mobile platforms.
- It is managed by the open Handset Alliance.
- It is based on Linux operating system.
The Apple iPhone OS.
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- iOS is the operating system that runs on Apple iPhone, Apple iPad, and Apple iPad Touch devices given to the devices by Steve Jobs during the 2010 WWDC. The iOS is one of the most used platforms for mobile devices, only slightly edged out by Android from Google.
- it is a closed source
- It is based on UNIX operating system.
The Open handset Alliance.
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The Open Handset Alliance (OHA) is a consortium of 84 firms to develop open standards for mobile devices. Member firms include Google, HTC, Sony, Dell, Intel, Motorola, Qualcomm, Texas Instruments, Samsung Electronics, LG Electronics, T-Mobile, Sprint Corporation, Nvidia, and Wind River Systems.
apple requires annual fees from developers?
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yes.
Apps must be submitted to Apple for approval before being added to the App store.
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yes
what is SDK
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Software Development Kit, SDKis a collection of software utilities and tools that help a programmer develop applications for a specific platform.
which applications does App store serve?
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applications created with iOS and Mac software development Kits.
name the two popular methods of detecting devices orientation
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Accelerometer
Gyroscope
Accelerometer characteristic detection capabilities are:
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forward/ backward, left/right, up/ down
Gyroscope characteristic detection capabilities are:
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roll, pitch, yaw
Accelerometer is ___________
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a device that measures non-gravitational accelerations - change in velocity.
gyroscope add three new axes of movement that Accelerometer didn’t have it help detect these motions_________
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roll, pitch, yaw
positioning and geolocation
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the position of the device from the viewpoint of the planet and the space, to accomplish that two technologies are used:
1- Magnetometer
2- Global position system.
magnetometer
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all iPad and iPhone beginning with the 3GS have included a magnetometer ( compass heading)
Global positioning system
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absolute position on the earth using
GPS global position system
GLONASS global navigation satellite system is a Russian form of GPS
what is geotracking ?
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is the geolocation information collected by the mobile devices.
apple added the geotracking feature to the iOS starting on version 4.
what is geortagging?
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is the process of attaching a physical location to a photograph’s metadata. The geotag may include regional geologic data, such as city and state, or it may include more precise data such as the latitude and longitude. Geotagging data may then be read by programs to show the user where the photo was taken.
The touchscreen
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The touchscreen enables the user to interact directly with what is displayed, rather than using a mouse, touchpad, or any other intermediate device
to have a good screen calibration we need to do recalibration, which varies between the two technologies used.
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resistive and capasitive.
resistive touchscreen is built using two layers of sturdy panels separated by an air pocket, what are those panels made of?
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One is plastic and the other is glass.
ITO stand for what?
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indium ten oxide
capacitive touchscreen
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in this screen the two layers of ITO are placed between two pieces of glass.
Combination touchscreens.
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it is a combination of the resistive and the capacitive.
mobile devices have the ability to access the networking services using which network?
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cellular network
what are the alternative access to the network that manufacturers provide in there devices?
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Bluetooth and WIFI
