Transcript Smartphone Overview iPhone 4

Smartphone Overview iPhone 4
By Anthony Poland
6 Nov 2014
iPhone 4
Disclaimer
The iPhone 4 is the product I own and is why is
the subject of this topic. The information in this
article applies to all smartphone brands and
models.
iPhone 4
Computer
The iPhone has a processor, memory and can
carry out logic and arithmetic operations. It is a
computer.
iPhone 4
Magnetometer
The iPhone has a sensor called a magnetometer
used for two general purposes: to measure the
magnetization of a magnetic material like a
ferromagnetic or to measure the strength and,
in some cases, the direction of the magnetic
field at a point in space.
iPhone 4
Accelerometer
The iPhone has a sensor called an accelerometer
used for measuring “proper acceleration” which is
acceleration relative to free fall. For example, an
accelerometer at rest on the surface of the Earth
will measure an acceleration g= 9.81 m/s2 straight
upwards. By contrast, accelerometers in free fall
orbiting and accelerating due to the gravity of Earth
will measure zero.
iPhone 4
Gyroscope
The iPhone has a sensor called a gyroscope used
for measuring or maintaining orientation, based
on the principles of angular momentum.
iPhone 4
Digital Camera
The iPhone has a sensor called a digital camera
that is used for encoding images and videos
digitally and storing them for later reproduction.
iPhone 4
Light-emitting Diode
The iPhone has an emitter called a light-emitting
diode (LED) that is used to illuminate
surroundings. Modern LEDs are available across
the visible, ultraviolet, and infrared wavelengths,
with very high brightness.
iPhone 4
Microphone
The iPhone has a sensor called a microphone
used for converting sound in air into an
electrical signal.
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Speakers
The iPhone has an effector called a microphone
used for converting an electrical audio signal
into a corresponding sound.
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UHF Transmitters
The iPhone has multiple UHF radios used for
making and receiving telephone calls over a
radio link. Multiple radios are required because
of multiple standards. Many phones support
three bands (900/1,800/1,900 MHz or
850/1,800/1,900 MHz) or four bands
(850/900/1,800/1,900 MHz).
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Wireless 802.11x Transmitter
The iPhone has a wireless network interface
card (NIC) for communicating over wireless
networks.
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Bluetooth Transmitter
The iPhone has a Bluetooth Transmitter for very
short range wideband communication.
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Global Positing System (GPS) Receiver
The iPhone has a GPS receiver used for
accurately calculating geographical location by
receiving information from GPS satellites.
Initially it was used by the United States military,
but now most receivers are in automobiles and
smartphones.
iPhone 4
Global Positing System (GPS) Receiver
The iPhone has a GPS receiver used for
accurately calculating geographical location by
receiving information from GPS satellites.
Initially it was used by the United States military,
but now most receivers are in automobiles and
smartphones.
iPhone 4
Touchscreen
The iPhone has a touchscreen that is used for
graphical user interface navigation. The body is
like a battery having a higher voltage than the
environment. The touchscreen is made of tiny
capacitors arranged in a grid that are sensitive to
voltage changes. This change detection initiates
computer operations.
iPhone 4
Liquid Crystal Display
The iPhone has a liquid crystal display that is
used for producing an image by passing light
through selected segments of the liquid crystal
and then reflecting it back from the mirror to
the viewer. LCDs have conductive plates or a
LEDs commonly.
iPhone 4
Inertial Navigation System
The iPhone has an inertial navigation system (INS)
that uses a computer, motion sensors
(accelerometers) and rotation sensors (gyroscopes)
to continuously calculate via dead reckoning the
position, orientation, and velocity (direction and
speed of movement) of a moving object without
the need for external references (GPS).
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Inertial Navigation System
In navigation, dead reckoning (also ded (for
deduced) reckoning or DR) is the process of
calculating one's current position by using a
previously determined position, or fix, and
advancing that position based upon known or
estimated speeds over elapsed time and course.
iPhone 4
Fire Control
The iPhone has an inertial navigation unit that
could be used in defense and security
applications as an integral part of a Fire Control
Navigation Panel (FCNP) (see command and
control) consisting of an Inertial Navigation Unit,
Fire Control Computer, and target identification
set laser.