The model library for ISIS Proteus enables the simulation of a 6-axis MotionTracking device that integrates a 3-axis gyroscope and a 3-axis accelerometer. This specific model allows you to test I2C communication and motion-sensing logic without physical hardware. GY-521 MPU6050 Hardware Overview
: You will usually find two types of files: .LIB (for the library) and .IDX (for the index).
A very specific and technical topic!