Originally dedicated to audio, Pd (aka Pure Data) is a real-time graphical programming environment for audio, video, and graphical processing. Widely adopted in interactive multimedia applications, Pd is used in computer music mainly as a synthesis and realtime DSP environment, as well as a performance and interactive composition environment. This is a tutorial (in Portuguese, by Alexandre Porres) that covers the basic syntax of Puredata and does not require any background in programming.