Arduino uno flash memory by robomart

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Arduino Uno Flash Memory
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Introduction of arduino uno

• Arduino UNO is the best platform for the
  beginners. It is a multipurpose board and  its
  using controller and can be powered directly from
  the USB battery or via an AC-to DC adapter which
  uses the ATmega 328 chip as the controller .If
  you are using an adapter you have to use a 9V or
  12V wall-wart.

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Arduino uno image
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Arduino Leonardo

• Leonardo Arduino  is a multipurpose
  microcontroller board which is based on
  ATmega32u4 (datasheet). It has total 20
  output/input pins, crystal oscillator of 16 MHZ,
  a power jack, a micro usb connection, an ICSP
  header, and including a reset button.For
  supporting a microcontroller there is every input
  in it.You can simply connect it to a computer
  with a usb cable or power it with an ac to dc
  adapter or a batterry to get it started. The
  Leonardo differs from all preceding boards in
  that the ATmega32u4 has built-in USB
• communication,eliminates the need for secondary
  processor.  

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ARDUINO LEONARDO
IMAGE
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Featuresof arduino leonardo

•  It allows the Leonardo to get connected  to
  computer as a mouse and keyboard, in addition to
  a virtual (CDC) serial / COM port. It also has
  other implications for the behaviour  of the
  board these are detailed on the getting started
  page. Leonardo is much advance in terms of
  features in all the earlier boards by arduino.The
  ATmega32u4 has a built in USB communication,
  which eliminates the need for secondary processor
  which leonardo appears to connected computer  as
  mouse and keyboard and adds a virtual (cdc) COM
  or serial port. It has other implications  for
  behavior board.

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Difference between arduino uno and arduino
leonardo
Pin diagram of arduino leonardo
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