The At sign @ symbol, also known as arobase, is widely used on the Internet, especially in email addresses. The keys that you must press to write this symbol will depend on your operating system (Windows or Mac), the configuration of the language of your keyboard, or if your laptop has a numeric keypad or not.
How To Get the @ Sign on a Windows Laptop
On a laptop with a numeric keypad, press Ctrl + Alt + 2 or Alt + 64.
On an English keyboard for the United States, press Shift + 2.
On an English keyboard for the UK, use Shift + `.
On a Spanish-language keyboard for Latin America, press Alt Gr + Q.
On an international Spanish keyboard, press Alt Gr + 2.