What is the difference between communication engineering, electronic information technology and technology, electrical engineering and its automation? ...

For communication engineering and electronic information engineering, the main courses are: freshman learning advanced mathematics, English, circuit analysis, C language and so on. Sophomore students study analog electronic technology or (electronic circuit), digital electronic technology, signals and systems, as well as basic linear algebra, probability theory, complex variable function, integral transformation and so on.

Junior and senior students study digital signal processing, communication principle, electromagnetic field and microwave technology, radio frequency circuit, single chip microcomputer and so on.

The major of electrical engineering, automation and automation you mentioned belongs to the major of strong electricity, while the major of communication and electronic information belongs to the major of weak electricity. I'm not sure about automation courses, but as far as discipline is concerned, automation major is relatively easy.

I study electronic information engineering, but I feel that there are fewer courses in automation, so I can have a lot of time to do what I like. However, there are also many courses in communication and electronic information.

As far as employment prospects are concerned, as far as communication and electronic information are concerned, many companies can enter, such as Huawei, Heavy Industry, Datang, China Mobile and China Unicom. And they can also go to other electronic companies to engage in development and maintenance, network, programming, database maintenance and so on. Anyway, there are many.

Automation should also be very easy to find a job, I have not specifically consulted.

Choosing a major depends on what you like. After all, interest is the best teacher.

I hope my personal opinion is useful to you.