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.
Dynamic Stability Control: Explained. Now that snow, ice and other winter messes are showing up all over the world we have received many question about the functions of Dynamic Stability Control (DSC). The following information is a brief synopsis of each of its functions and the basics behind it all.