Tablet NOTES

1. TABLET

2. • Tablet computers fill a niche between
smartphones and personal computers
• tablets tend to have faster processors
than your typical smartphone but fall
short of the processing power find in an
average computer.
• One can watch videos, listen to music,
surf the Web, read electronic
documents, play games and launch apps
from a tablet.

3. So what exactly is a tablet?
• a tablet PC is a mobile computing device
that's larger than a smartphone or personal
digital assistant. There's not a strict cutoff size
for tablet devices -- the iPad line sports a
screen size of just under 10 inches but other
tablets can be larger or smaller. In general, if
the computing device uses an on-screen
interface and doesn't include a phone, it's a
tablet.

4. So what exactly is a tablet?
• some manufacturers produce hybrid devices
that are part tablet, part laptop computer. The
device might come with an attached keyboard
-- the screen swivels or folds down to cover
the keyboard and voila, you have a tablet!

5. History of Tablets
• in 1968, a computer scientist named Alan Kay
proposed that with advances in flat-panel display
technology, user interfaces, miniaturization of
computer components and some experimental
work in WiFi technology, you could develop an
all-in-one computing device. He developed the
idea further, suggesting that such a device would
be perfect as an educational tool for
schoolchildren. In 1972, he published a paper
about the device and called it the Dynabook.

6. History of Tablets
• Key was ahead of his time. It would take
nearly four decades before a tablet similar to
the one he imagined took the public by storm.
• One early tablet was the GRiDPad. First
produced in 1989, the GRiDPad included a
monochromatic capacitance touch screen and
a wired stylus. It weighed just under 5 pounds
(2.26 kilograms).

7. History of Tablets
• It really wasn't until Steve Jobs revealed the
first iPad to an eager crowd that tablet
computers became a viable consumer
product. Today, companies like Apple, Google,
Microsoft and HP are trying to predict
consumer needs while designing the next
generation of tablet devices

8. In the tablet market, there are two
primary
• the Apple iPad. Apple
has strict control over
the entire design of the
iPad from the user
interface (UI) all the
way down to the actual
hardware.
• Google is responsible
for the Android
operating system (OS),
other companies
produce the hardware.
Hardware
manufacturers may
even alter the UI
without changing the
functionality of the
operating system.

9. Android Tablet Features and Specification
• a processor, generally underclocked to limit heat output
• memory chips
• a storage chip and possibly a slot for additional storage
• a battery
• a graphics processor
• a sound processor and speakers
• sensors such as accelerometers, a compass and light
sensors
• a GPS receiver
• a Wi-Fi antenna (and possible a cellular antenna)
• a Bluetooth chip
• an FM tuner
• at least one camera

10. INSIDE TABLET
• The brain of a tablet is its microprocessor.
Typically, tablets use smaller processors than full-fledged
computers. This helps save on space and
cuts down on heat generation. Heat is bad for
computers -- it tends to cause mechanical
failures.
• Tablet computers typically draw power from a
rechargeable battery. Battery life for tablets
varies between models, with eight to 10 hours
being the average.

11. INSIDE TABLET
• Depending on the manufacturer, a tablet computer may be
underpowered on purpose. Computer CPUs execute
commands in clock cycles. The more clock cycles a CPU
runs per second, the more instructions it can process. Some
tablets have underclocked processors, meaning the CPU is
set to run fewer instructions per second than it's capable of
executing. The reason for making a CPU underperform on
purpose is to reduce heat production and conserve battery
life.
• the truth is most tablets don't need the extra processing
power. Programs for tablets tend to be less complex and
robust than computer programs. The common term for
these programs is applications or apps.

12. How to Choose an Android Tablet
• Before you set out to buy an Android tablet,
you need to ask yourself a few questions. Are
you prepared for a device that has a learning
curve? Navigating an Android device is a
learning experience.
• The next question to ask is how much are you
willing to spend? Because there are dozens of
different Android tablets from various
manufacturers on the market

13. How to Choose an Android Tablet
• Researching the products is important. If you
want a device that can run the latest apps and
has all the features Android allows, you'll want
to concentrate on the tablets with the most
recent build of the Android operating system.
• Not all Android tablets are equal. If you want a
tablet that lets you make video calls, you'll
want one that has a forward-facing camera.

14. How to Choose an Android Tablet
• If you plan to store a lot of content on your
device, including movies, music and apps,
you'll probably want a tablet with expandable
storage like an SD-card slot.
• Will you want to use your Android tablet on
the road? If so, you may want one with a
cellular antenna so that you can access the
Internet