"PROVIDES INPUT POWER CONTROL FOR THE FUEL SAVINGS ADVISORY SYSTEM (FSAS);THE DICU CONTAINS FOUR ANNUNCIATORS FOR USE WITH FSAS AND INS; THE DICU SUPPLIES AN ALTITUDE ALERT FUNCTION, AND AN OPTIONAL INHIBIT COMMAND FOR THAT FUNCTION; THE DICU CONTAINS VARIOUS SWITCHING FUNCTIONS WHICH CONTROL AUXILIARY DISPLAYS FOR THE WEATHER RADAR APS-133"