Mouse Sorting

<graphvizr>

 digraph D {

  start         [label="START HERE", fontsize="11", shape="box", style="bold"]

  ps2           [label="Is it a PS/2 mouse?", fontsize="11"]
  optical       [label="Is it an optical mouse?", fontsize="11"]
  wireless      [label="Is it an wireless mouse?", fontsize="11"]
  usb           [label="Is it a USB mouse?", fontsize="11"]
  trackball     [label="Is it a\nTRACKBALL\n(not a mouse)?", fontsize="11"]
  twobutton     [label="Does it have\nTWO BUTTONS\nand a\nSCROLL WHEEL?", fontsize="11"]

  recycle       [label="RECYCLE that mouse!", fontsize="11", shape="box", style="bold"]
  build         [label="Send that mouse\nto BUILD", fontsize="11", shape="box", style="bold"]
  store         [label="Send that mouse\nto the STORE", fontsize="11", shape="box", style="bold"]

  start        -> trackball
  trackball    -> store [label="YES"]
  trackball    -> optical [label="NO"]
  optical      -> store [label="YES"]
  optical      -> usb [label="NO"]
  usb          -> wireless [label="NO"]
  usb          -> store [label="YES"]
  wireless     -> ps2 [label="NO"]
  wireless     -> store [label="YES"]
  ps2          -> twobutton [label="YES"]
  ps2          -> recycle [label="NO"]
  twobutton    -> recycle [label="NO"]
  twobutton    -> build [label="YES"]
  
 }

</graphvizr>

NOTE

Macintosh ADB (round 4 mini-pin connector) mice and trackballs can be recycled directly. Macintosh USB mice and trackballs go to the Mac shelves.