Official Photos Â». Robert Downey Jr. has evolved into one of the most respected actors in Hollywood. With an amazing list of credits to his name, he has managed to stay new and fresh even after over four decades in the business. Downey was born April 4, 1965 in Manhattan, New York, the son of writer, director and filmographer Robert Downey Sr. and actress Elsie Downey ... See full bio Â». Robert John Downey Jr.
Professional learning community. A professional learning community (PLC) is a method to foster collaborative learning among colleagues within a particular work environment or field. It is often used in schools as a way to organize teachers into working groups of practice-based professional learning. Contents.
A programmable logic controller, PLC, or programmable controller is a digital computer used for automation of typically industrial electromechanical processes, such as control of machinery on factory assembly lines, amusement rides, or light fixtures.PLCs are used in many machines, in many industries.PLCs are designed for multiple arrangements of digital and analog inputs and outputs, extended temperature ranges, immunity to electrical noise, and resistance to vibration and impact.ore recently, PLCs are programmed using application software on personal computers, which now represent the logic in graphic form instead of character symbols. The computer is connected to the PLC through Ethernet, RS-232, RS-485, or RS-422 cabling.