LECTURE 3 Flashcards
Often known as cellular phones, are compact, inexpensive, and portable devices
MOBILE PHONE
The operating system of mobile is often plain and straightforward, with free menus and few options to tweak features like the virtual keyboard
MOBILE PHONE
refers to a handheld electronic
device that provides a connection to a cellular network.
SMARTPHONE
they were originally meant to allow individuals
to communicate via phone and email, smartphones now
allow people to access the internet, play games and send
text messages in addition to making phone calls and
sending emails.
SMARTPHONE
What the FEATURES OF SMARTPHONE??
Internet Connectivity
Crystal-clear Display
Digital Camera
Infrared Remote control
Fingerprint Sensor
What are the types of Smartphone?
iPhone
Adnriod
Amazon’s Fire Phone
Windows Phone
What are the DISADVANTAGES OF SMARTPHONE?
Costly
Wastage of Time
Distraction
Addiction
Health Issues
Uncensored Contents
Privacy Threats
What are the IMPORTANT SPECIFICATIONS?
Chipset
CPU
GPU
RAM
Storage
Network
which are
designed to perform one or a few dedicated functions, often with
real-time computing constraints. They are embedded as part of the
complete device including hardware and mechanical parts.
CHIPSET
Modern microprocessors appear in everything from automobiles to
mobile phones.
CPU
fundamental rate in
cycles per second (measured in hertz, kilohertz, megahertz or
gigahertz) for the frequency of the clock in any synchronous circuit.
A single clock cycle (typically shorter than a nanosecond in modern
non-embedded microprocessors) toggles between a logical zero and
a logical one state.
CPU CLOCK RATE
a specialized circuit designed
to accelerate the image output in a frame buffer intended for output
to a display.
GPU
is used by both OS and
application software.
RAM
By modern standards, both storage options seem pretty low. That’s
for a reason, of course. We take plenty of pictures and videos, mobile
games and apps have gotten bigger, and we save as many memes
as possible for later use.
STORAGE
The geographical area covered by the network of a service
provider.
NETWORK
The symbols that follow IP - IP67, for example, or IPX7 indicate the
level of protection that’s provided. You’ll often see these ratings in
product advertising, on the retail box, and quoted in product reviews
including TechHive’s.
INGRESION PROTECTION
The first number references the size of foreign objects that will be rejected, and the second
number rates the item’s resistance to liquid ingress.
NUMEROLOGY
INGRESS PROTECTION FROM FOREIGN OBJECTS
Protected against objects larger than 50 mm (2 inches)
2: Protected against objects larger than 12.5 mm (0.5 inches)
3: Protected against objects larger than 2.5 mm (0.1 inches)
4: Protected against objects larger than 1 mm (0.04 inches)
5: Keeps enough dust out to prevent failure
6: Dustproof (no ingress)
X: Not tested. You’ll see this if the device was tested for liquids, but not solids; e.g., IPX7.
INGRESS PROTECTION FROM FOREIGN LIQUID
Protected from vertical water drops (normal rain)
2: Protected from vertical water drops when device is angled upwards 15 degrees
3: Protected against water sprayed at an angle up to 60 degrees on either side of vertical.
4: Protected against water sprayed from any direction shall have no armful effects.
5: Protected against water projected in jets from any direction.
6: Protected against water projected in powerful jets from any direction
7: Can withstand immersion in up to one meter (approximately 3.3 feet) of water for 30 minutes.
8: Can withstand immersion in up to three meters (approximately 9.8 feet) of water for an
specified amount of time agreed upon with the IEC.
X: Not tested. We’ve yet to see this for reasons we’ll discuss below.
IP RATINGS UNCOMMON TO CONSUMER
ELECTRONICS
A. Protects the back of the user’s hand from access to hazardous parts.
B. Protects the user’s fingers from access to hazardous parts.
C. Protects tools from contact with hazardous parts
D. Protects wire from contact with hazardous parts.
And
H. High-voltage device
M. Motion was induced during liquid tests
S. No motion was induced during liquid tests (device was static)
W. Weather conditions are stated
This has both electronics, microelectronics, and micromechanical
modules inside. These use gyroscopes sensor information as well to
make more precision, information, and data.
ACCELEROMETER
MEMS
Micro Electro Mechanical System sensor.
This measures change in orientation and angular velocity. Some
sensor types include Microchip Packaged MEMS gyroscopes, this is
the commonly one that is in smartphones and smart watches.
GYROSCOPES
This is an optical infrared light sensor technology and the operation
mechanism looks like this, where infrared light is absorbed by blood
and that is measured. Qe look at the infrared light that is being
absorbed and when it becomes darker, that is most likely because the
blood flow amount has increased and that is when a heart pulse is
done.
HEART RATE SENSOR
