The document discusses the Arduino prototyping platform. It was started in Italy and uses an ATmega328P microcontroller with 28 pins and a maximum speed of 20 MHz. The Arduino can be powered through a USB or DC power jack and uses a 16 MHz crystal. It has digital and analog pins and can interface with PCs or mobile devices.

2. Introduction:
 ARDUINO is a Open-source electronic prototyping
platform enabling users to create interactive
electronic objects.
 ARDUINO project started at the Interaction Design
Institute Ivrea in Italy.
 Arduino's initial core team consisted of Massimo
Banzi, David Cuartielles, Tom Igoe, Gianluca
Martino, and David Mellis.

3. Arduino Mini
Pro mini
DIFFERENT BOARDS IN ARDUINO

4. Uno R3
Mega

5. USB JACK
DC POWER JACK
5V LDO
16MHz CRYSTALRESET
DIGITAL PINS
ANALOG INPUT PINSPOWER PINS
ATMEL 328P

6. ATMEGA 328P
 The ATmega328 is a single-chip microcontroller created by Atmel in
the megaAVR family.
 Pin count 28.
 Maximum operating frequency 20 MHz.

7. 16 MHz CRYSTAL:

8. ARDUINO DC POWER JACK:
There are two ways to power your Arduino:
 you can use the USB connector to connect to a computer or portable power
pack USB can be used to power and program.
 you can plug into a wall adapter. DC can only be used for power - but it's
great for when you want to connect your Arduino and leave it plugged in
for a long term project.

9.  Used for connecting a PC to your Arduino.
ARDUINO USB CONNECTOR:

10. ARDUINO PC INTERFACE

12. ARDUINO MOBILE INTERFACE