99.99% of IC's are designed to perform a certain task, and that is all they do. An IC is basically like a circuit board with all of the components to perform the task, inside of it.
Someone told me not every ic have tp be programmed to do something. I think and example was vrm. It was something like that. Of thays true then how does it do what it does. Explain to me ic good and it's info.
