what happens when "g" is pressed

The "g" key is pressed
The following sections explain the physical keyboard actions and the OS interrupts. When you press the key "g" the browser receives the event and the auto-complete functions kick in. Depending on your browser's algorithm and if you are in private/incognito mode or not, various suggestions will be presented to you in the dropdown below the URL bar. Most of these algorithms sort and prioritise results based on search history, bookmarks, cookies, and popular searches the internet as a whole. As you are typing "google.com" many blocks of code run and the suggestions will be refined with each key press and It may even suggest "google.com" before you finish typing it.