Access does not require saving. If you close it it automatically saves.
If you have an object under construction like a Table, Query, Form etc you will be prompted to save it upon closing and in some situations at other times.
As far as data is concerned, it is automatically saved when you move to a new record.
Does this answer your question.
Also next time you post could you please say what version you are using. It could help in such situations as you have described here.
I put it in as part of my signature so that it is always there.