Is the touch display an input device or an output device

Touch panels should be classified as input devices. This is because its main function is to receive tactile input from the user, rather than outputting information to other devices. Although in some cases, such as integrated screens with touch functionality, they may include both input and output functions, this does not change their essence as input devices. Therefore, when it comes to touch displays, it should be considered as an input device used to convert user touch commands into signals that the computer can understand.