title: Baud rate in PIC18F4550
body: <p>for computing the baud rate for PIC18F4550, the following equation is used:<br>
  <code>Baud = F_OSC/(4 * (SSPADD + 1))</code>  ---------- eq.1</p>
  
  <p>according to the data sheet:
  <code>SSPADD = 10</code> for 400k Baud at 20Mhz Fosc.</p>
  
  <p>But by substituting the parameters into equation (1), the SSPADD will equal 11.5 
  so how is <code>SSPADD = 10</code>?</p>