2. Fan-Out Wire

module top_module(input a, output y1, output y2, output y3);
  // One driver (a) fans out to multiple loads (y1,y2,y3)
  assign y1 = a;
  assign y2 = a;
  assign y3 = a;
endmodule

💡 Remember

One input can fan out to multiple outputs using separate assign statements.
All outputs (y1, y2, y3) are directly tied to the same driver (a).
Synthesis tools map this to parallel wires — no extra logic is inserted.
Outputs will always match the input simultaneously.