For optimal communication, both parties must be able to speak in the same language to better understand each other. The process is the same with your computer. You probably don't notice it because system software takes care of translating your information to the machine without you knowing it.

If you aim to achieve a level of expertise in the field, you must be able to communicate directly with the device. Thus, you will have the opportunity to design your own applications. Computer languages are legion, and each differs depending on the use you want to make of them.