The first thing you need to do if you want to write an article for SILICON CHIP magazine is to contact us (see the Contact page) and tell us what you want to write about. Include the subject and a short summary (eg, a bullet point list of the proposed sections). We don't publish every article sent to us and we don't want you to waste your time writing something that is not on a subject we're interested in publishing. Consider that we might already have an article on a similar topic in progress or about to be published.
If we are interested, we will send you a set of documents including writing guidelines and our style guide. You can then take it from there.