title: NACK and ACK responses on I2c bus
body: <p>My recent project requires the use of i2c communication using a single master with multiple slaves. I know that with each data byte (actual data) sent by master,the slave responds with Nack\Ack(1,0).
  I am confused that how this Nack and ACK are interpreted. I searched the web but i didn't got clear picture about this. My understanding is something like this.</p>
  
  <p>ACK- I have successfully received the data. Send me more data.
  NACK- I haven't received the data.Send again.
  Is this something like this or I am wrong.
  Please clarify and suggest the right answer.</p>
  
  <p>Thanks
  Amit kumar</p>