Mechanical control systems (staplers, car windows) use parts for movement/force control. They include input, process, and output. Types of motion: linear, rotary, reciprocating, oscillating.

The question of the correct way to measure inflation is an important one. Price stability over time, along with "maximum" sustainable economic output and employment, are the Federal Reserve’s primary ...

Potential real GDP is the real output that an economy can produce when it is operating at a level that can be sustained without excessive inflation.