QUICK TOUR OF THE AQUARIUS COMPUTER SYSTEM 110 (Input/Output) PORTS. Input or Output devtces (tape recorder and prin te r) plug into your com· puler here. YOUR AQUARIUS '" COM PUTER (With built-in BA SIC language) CARTRIDGE PORT . Accepts pre· programmed Aquarius game car· tndges or the Aquar iu s Mini ~=de, Mo~ TV HOOK-UP CABLE with ANTENNA SWITCH BOX . KEYBOARD. Used to type in in· formation or instructions and play games. Many keys print entire POWER ON/OFF SWITCH BASIC commands in a sm gle keystroke. when used wtth the CTL (Control) key. POWER ON INDICATOR LIGHT.