Income derived from Social Security is currently estimated to keep roughly 20% of all Americans, age 65 or older, above the Federally defined poverty level. The Social Security Administration is headquartered in Woodlawn, Maryland, just west of Baltimore.
Control is the term used to describe an object in a window or dialog box. Controls include push buttons, scroll bars, radio buttons and pull-down menus.
Controlled Variable â The controlled variable is a process parameter being controlled. In the example here, water level in the tank is the controlled variable, but it can be any process you wish to control. Controlling this variable is the primary function of process control.