| A | B |
| Analog | A way of representing some physical quantity, such as temperature or velocity, by a proportional continuous voltage or current. |
| Digital | A way of representing a physical quantity by a series of binary numbers. |
| Encoder | A digital circuit that produces an output code depending on which of its inputs is activated. |
| Input | Information fed into a data processing system or computer. |
| Latitude | Latitude is a coordinate that is used to specify positions on a sphere. The latitude of a place is the distance of the place to the equator, measured in degrees along a circle between the two poles. |
| Longitude | Longitude is a coordinate that is used to specify positions on a sphere. The longitude of a place is the distance of the place to the prime meridian, measured in degrees along a circle at a fixed distance to the poles of the sphere. |
| Output` | The information produced by a computer. |
| Potentiometer | A switch that can provide variable motion control. It can vary the resistance within the switch, which affects both the current and voltage flowing out of the switch. |
| Servo Motor | Any motor that is modified to give feedback concerning the motor's speed, direction of rotation, and number of revolutions. |
| Topographical Map | A map showing the three-dimensional nature of the terrain surface (elevations and landforms) as well as other ground features. |
| UAV | A way of representing some physical quantity, such as temperature or velocity, by a proportional continuous voltage or current. |