Hello. I need help. I am beginner in Arduino . I want to view a signal on an oscilloscope of an Arduino digital pin, but not just that it is in 1 or 0. I would like to be able to view on that pin a combination (eg 10110011). There may be someone who can help me. Thanks.
A recording oscilloscope will do that for you.
Paul
Or better yet, a logic analyzer. You can get one for reasonably cheap these days. Here is an example of one (I do not use this so I cannot recommend it):