Some hearing milestones your child should reach in the first year of life: 1  Most newborn infants startle or jump to sudden loud noises. 2  By 3 months, a baby usually recognizes a parent's voice. 3  By 6 months, a baby can usually turn his or her eyes or head toward a sound.
(December 2008). Direct digital control (DDC) is the automated control of a condition or process by a digital device (computer). DDC is considered by many to be a more modern, granular and responsive update to older HVAC control systems based upon PLC technologies.
DDE is a system that monitors the position of the accelerator and the driverâs application of pressure to determine exactly when fuel injection is to start, as well as the volume of fuel supplied and charge pressure.This ensures optimum fine tuning for the relevant engine responses under all running conditions.igital Diesel Electronics (DDE). Fine tuning for fuel injection-the Digital Diesel Electronics (DDE) system manages all engine functions in BMW diesel models.