It is a card on which electronic components, including one or more microcontrollers, are integrated. The microcontroller enables the card to be controlled using a computer program. This program can be written in different programming languages, because without a program it cannot work. To do this, you must connect your card to a computer to insert a program into it, so that you can use it independently.

This is huge, but Sade to say I am lost because my IQ on programming is low, but this post has given me idea on card programming. On the whole it's so nice to have you here @kouba01