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.
Control todayâs high liability costs with a driver. safety course that is convenient and effective. Course description. The National Safety Council Defensive Driving Course (DDC) Online brings the time-tested. content and acclaimed videos from our flagship DDC classroom course into a convenient web-. based format. The course delivers leading-edge content to keep drivers safe while meeting the.