Page 96 - KEC Khaitan C5 Flipbook
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SENSORS AND APP                                                                        CHAPTER

                  FUNCTIONALITY                                                                          B3















                     learning outcomes


                    The student will be able to:
                        understand how sensors enhance app functionality by collecting environmental data.
                        identify different sensors and their everyday applications.
                        design and develop a Pedometer App using MIT App Inventor.
                        program the app to start, stop, and reset step counts accurately.
                        debug and fix common issues to ensure smooth app performance.


                  Sensors help phones and devices  feel  and  understand the world  around them, like
                  movement, light, and location. They make apps fun and useful, like helping in games,
                  maps,  and fitness  tracking.  In this  chapter,  we will learn about  different sensors  and
                  create a Pedometer App to count steps using the Pedometer Sensor.




                            SENSOR


                  A sensor is a component that helps an app interact with the physical environment by
                  detecting motion, location, sound, and other data from the device. Sensors can be found
                  in the Sensors category in the Palette.

                  TYPES OF SENSORS AND THEIR APPLICATIONS

                  There are many different types of sensors that help devices detect and respond to changes
                  in their surroundings.

                  1. Accelerometer Sensor
                  An accelerometer sensor is like a tiny helper inside your phone that feels when the phone
                  moves, shakes, or tilts. Used in gaming apps to control characters by tilting the phone, in
                  fitness apps to track movement, and in security apps to detect phone drops or theft.


                  2. Barcode Scanner
                  A barcode scanner is like a magic eye in your phone that can read secret codes on
                  objects. Used in shopping apps to scan product barcodes, library apps for book check-ins,
                  and payment apps to scan QR codes for transactions.



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