Method and device for sending and receiving data

Abstract

The disclosure discloses a method and device for sending and receiving data, which are used to solve the problem that the existing device having the function of the laser pen and the function of the data card cannot implement the integrated control over the function of the laser pen and the function of the data card. The device includes a main module and a connection module. The connection module is configured to connect to a PC by using a USB mode, and the main module communicates with the connection module by high frequency. The method for sending data includes: the main module encapsulates data to be sent according to a type of the data to be sent and identification information corresponding to the type of the data, and sends the encapsulated data to the connection module; and the connection module decapsulates the encapsulated data and sends the decapsulated data to the PC. Since the device determines the identification information corresponding to the type according to the type of the received data, and encapsulates the identification information and the data, in order to be capable of performing corresponding processing when needed, so that intelligent integration of the function of the laser pen and the function of the data card is implemented and an intelligent control over the function of the laser pen is implemented.