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Your question is very broad and does not give any information about what your actual problem is beyond wanting a list of computer busses.
When you originally asked your question you were essentially asking for a list of computer busses and learning recommendations. At the moment you are still asking for "list of things" which is not a good fit for a question and answer site where we focus on solid fixable problems.
I've been learning about computer buses, I learned that there are two
main types of computer buses:
- Internal buses
- External buses
My question is, I want the complete categorization with examples.
This is still too broad because there are many busses both internal and external and describing them all in sufficient detail, without simply copying a lot of Wikipedia articles, would be a massive undertaking. You would be better off buying a book on the subject. Your original question did ask for a reading recommendation, learning recommendations are also off topic here as we want to solve actual problems with computer hardware and software.
If one person posts one list while another posts a slightly different list, how would you choose which list is more correct?
From our help page What types of questions should I avoid asking?
You should only ask practical, answerable questions based on actual problems that you face. Chatty, open-ended questions diminish the usefulness of our site and push other questions off the front page.
Your questions should be reasonably scoped. If you can imagine an entire book that answers your question, you’re asking too much.
There are better places on the internet to list things out for you and Google is your friend in this case. The first link is to Wikipedia and the excerpt on Google shows a link to examples of internal/external busses.
If you were just asking about the specifications of one bus then that would not be "too broad". Asking about all of them is far too broad.