Assuming you would like information on how to manually enter a code:
There are many reasons you might need to enter a code into your computer. Maybe you're redeeming a video game key or signing up for a new service. Whatever the reason, it's usually pretty simple to do. Here's a step-by-step guide on how to enter codes on PC.
1. Open the program or site where you want to use the code. This could be Steam, Origin, Battle.net, or any number of other places.
2. Find the place where you can input the code. This is usually in the form of a text box labeled Enter Code or something similar.
3. Type or paste the code into the text box and hit Enter/Return to activate it. Some codes may require you to click an Apply button after entering them before they will work properly.
4) And that's it! If everything went smoothly, the code should now be activated and working as intended within the program or site.