Ordinary backpack; Generally speaking, it is casual or close-fitting, and it can hold more things. Generally, in college, this kind of bag is carried as a shoulder bag, that is, two shoulder straps are carried on one shoulder, which is more casual and personalized.
Computer bag; Nowadays, college courses are more open, and computers are often used, such as computer theory courses, to go to the library. I usually bring a few books to class and seldom carry a computer bag, which is too formal.
These are basically the kinds in universities. There are few classes in college, so it is enough to bring one or two books in many cases, and there are many people who walk directly to class with books in their hands.
The above is from my college life, I hope to adopt it!