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. 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.
title / office. Sam Houston, byname of Samuel Houston (born March 2, 1793, Rockbridge county, Virginia, U.S.âdied July 26, 1863, Huntsville, Texas), U.S. lawyer and politician, a leader in the Texas Revolution (1834â36). 1  In his youth Houston moved with his family to a farm in rural Tennessee after the death of his father in 1807.
Andrew Jackson Houston. Andrew Jackson Houston (June 21, 1854 â June 26, 1941) was an American politician. He was a son of the famous Texas hero and statesman Sam Houston and his wife Margaret Lea Houston, and was named for his father's mentor Andrew Jackson. He served briefly as a United States Senator in 1941, appointed to temporarily fill the vacancy left by the death of longtime Senator Morris Sheppard.