Our life is closely related to the media. Please list four media methods and briefly describe their functions.

1, TV. Its function is to receive all TV signals transmitted by TV stations through antennas, and then separate video signals and audio signals through electronic circuits, and restore them to images and sounds through fluorescent screens and speakers respectively.

2. newspapers. Function is an important carrier of mass communication and has the function of reflecting and guiding public opinion.

3. radio. Machines that convert radio signals with electric energy can listen to audio signals transmitted by radio stations.

4. computer. It is an electronic computer with high-speed calculation, which can be used for numerical calculation and logical calculation, and also has storage and memory functions. It is a modern intelligent electronic device that can run according to the program and automatically process massive data at high speed.