2. A sensor for measuring the acceleration of a moving or vibrating body.

3. A device consisting of a wheel or disc mounted so that it can spin rapidly about an axis which is itself free to alter in direction.

4. A device for recording visual images in the form of photographs, film, or video signals.

5. A display device which allows the user to interact with a computer by touching areas on the screen.

6. An instrument used for measuring magnetic forces, especially the earth's magnetism.

7. an instrument measuring atmospheric pressure, used especially in forecasting the weather and determining altitude.

8. A standard for the short-range wireless interconnection of mobile phones, computers, and other electronic devices.

9. A facility allowing computers, smartphones, or other devices to connect to the Internet or communicate with one another wirelessly within a particular area.

10. A Light Sensor is something that a robot can use to detect the current ambient light level

11. an instrument for measuring and indicating temperature

12. is an instrument used for measuring the moisture content in the atmosphere

13. an instrument for estimating the distance travelled on foot by recording the number of steps taken.

14. A heart rate monitor is a personal monitoring device that allows one to measure one's heart rate in real time or record the heart rate for later study

15. Fingerprint recognition refers to the automated method of verifying a match between two human fingertips