按照信息论观点，一个信息过程大致包括信息的获取、传输、处理、存储等步骤。人的认识过程与此有相似之处。如学习外语，一般都要做到听、说、读、写。读与听是信息的输入。说与写是经过大脑加工的信息输出，同时也起反馈的作用，把输出的信息又再次输入，也就是经过反复多次 According to the theory of information theory, an information process generally includes the steps of acquiring, transmitting, processing and storing information. Human awareness of the process and there are similarities. Such as learning a foreign language, generally have to do listening, speaking, reading and writing. Reading and listening are the input of information. That is to say and write through the brain processing of information output, but also play a role in the feedback, the output of the information input again, that is, after repeated