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.
A specification published and maintained by the OPC Foundation. OPC Commands defines a new set of interfaces that allow OPC clients and servers to identify, send and monitor control commands which execute on a device. OPC Complex Data: OPC Complex Data is a standard published by the OPC Foundation.