13-09-2017, 01:42 PM
Electrical currents and voltages (signals) travel in circuits to energize actuators and sensors. Actuators are components that produce physical quantities (forces, displacements, heat, temperature, acoustic radiation, electrical radiation, etc.) when subjected to an appropriate electrical signal. On the other hand, sensors are devices that produce an appropriate electrical signal when subjected to a physical quantity. In fact, sensors and actuators are used for opposing purposes. The manipulation of these actuators and sensors is through circuit design - of which there are two types:
1) analog design and
2) digital design.
1) analog design and
2) digital design.