Before revision: Most of the larger TRACONS employ a 21 " Sony color tube display called an ARTS Color Display (ACD) in Common ARTS software platforms or Terminal Control Workstation (TCW) and Tower Display Workstation (TDW) in STARS driven platforms .
After revision: Most of the larger TRACONs employ a 20 " Sony color tube display ; Common ARTS uses the ARTS Color Display (ACD) and the Remote ARTS Color Display (R-ACD), while STARS uses the Terminal Control Workstation (TCW) and Tower Display Workstation (TDW) x 20" .