Search wiring.org.co:

This example is for Wiring version 1.0 build 0100+. If you have a previous version, use the examples included with your software. If you see any errors or have comments, please let us know.

Advanced Output by Nicholas Zambetti http://www.zambetti.com
Demonstrates printing with the Serial library Uses a variety of print calls to output the ASCII character mapping

    void setup()
    {
      Serial.begin(9600);

      // prints title with ending line break
      Serial.println("ASCII Table ~ Character Map");

      // wait for the long string to be sent
      delay(100);
    }

    int number = 33; // first visible character '!' is #33

    void loop()
    {
      Serial.write(number); // prints value unaltered, first will be '!'

      Serial.print(", dec: ");
      Serial.print(number); // prints value as string in decimal (base 10)

      // this also works:
      // Serial.print(number, DEC);

      Serial.print(", hex: ");
      Serial.print(number, HEX); // prints value as string in hexadecimal (base 16)

      Serial.print(", oct: ");
      Serial.print(number, OCT); // prints value as string in octal (base 8)

      Serial.print(", bin: ");
      Serial.println(number, BIN); // prints value as string in binary (base 2)
      // also prints ending line break

      // if printed last visible character '~' #126 ...
      if (number == 126)
      {
        // loop forever
        while (true)
        {
          continue;
        }
      }

      number++; // to the next character

      delay(100); // allow some time for the Serial data to be sent
    }