I'm learning about the different kinds and functionalities of electronic memories (i.e. ram, flash, etc) but I'm a little confused because all the sources show something different and I don't know which of them is correct.
Does anybody know about manuals or documents which are accurate in its contents?
P.S: Documentation about micro-controllers would be good too. The purpuse of this is only learning. I'm not looking for documentation about a specific device.