The document is a presentation on Android OS, authored by Nahian Ahmed, detailing its history and development by Google based on the Linux kernel. It outlines various versions of Android from 1.6 (Donut) to 5.0 (Lollipop) and highlights features such as voice typing and customization advantages. The presentation emphasizes Android's design for touchscreen mobile devices like smartphones and tablets.

1. A Presentation on Android OS
Submitted by :
Nahian Ahmed.
ID:151-15-5137.
Section – H.
Submitted To:
Nasir Uddin Eisty.

2. History
Android is a mobile operating system
(OS) based on the Linux kernel and
currently developed by Google. With a
user interface based on direct
manipulation.
Android is designed primarily for
touchscreen mobile devices such as
smartphones and tablet computers.

3. A to Z of Android OS Series
#.Android 1.6, Donut
1st android os.
#. Android 2.0, Éclair.
Come after 1.6.

4. .
#. Android 2.2, Froyo.
New in this Voice Typing lets you input text
and Voice Actions let you control your phone,
just by speaking.
#. Android 2.3, Gingerbread.
It was more popular than before.
#. Android 3.0, Honeycomb
Optimized for tablets, this release
opens up new horizons
wherever you are.

5. #.Android 4.0, Ice
Cream Sandwich.
More popular than
Before.
#. Android 4.1, Jelly Bean.
Come with 1.2 -1.7 gh
Processor.

6. #. Android 4.4, KitKat .
Come with high end
Processor and latest in
Our country.
#.Android 5.0, Lollipop
Not let in our country.

7. Some Advantage
#. Can customize by root
#.can use custome ram .
Bye