The Stairs Approximation algorithm, termed an incremental interpolator, determines the direction of the step every BLU interval and sends the pulse to the related axis. In this section, the Stairs Approximation interpolator for a circle will be a

详细介绍蓝牙的通信原理，并介绍蓝牙主从机间的关系，BLU具有低功耗的优点。(Details of the Bluetooth communication principle, and describes the relationship between the Bluetooth master and slave, BLU has the advantages of low power consumption.)