DirectX is a collection of APIs (Application Programming Interface) that makes it possible to program computer games in Windows and communicate with computer hardware such as audio and video cards.
Computer games that support DirectX can use the multimedia and graphics functions more efficiently and improve overall performance.
If you want to know which DirectX version you have installed, you can look it up in your Windows computer in the following ways.
What version of DirectX do I have installed?
To identify the installed DirectX version in Windows, right-click on the Start button.
Choose Run from the menu. In the run window type: dxDiag. Press ENTER to start the DirectX utility.
Once the DirectX diagnostic tool has been started, you will find the text at the bottom labeled: DirectX version. Behind this label you will find the installed DirectX version in Windows.
I hope this helped you. Thank you for reading!