G-code is a special language that tells computerized machines, like 3D printers or CNC machines, what to do in order to create objects. Imagine you're playing with Legos and someone tells you what pieces to use and how to put them together. G-code is like that someone telling the machine what to do.
There are different types of G-code that each have a different purpose. Some tell the machine how fast to move, others tell it where to make cuts or add new material. It's like a set of instructions that the machine follows very closely, almost like a recipe.
To create G-code, engineers and designers use software programs to design the object they want to create digitally. Then, the software automatically creates the G-code for the machine to follow. This means that the machine can create exact copies of the design, over and over again.
Overall, G-code is a special language that tells machines what to do in order to create things. It's like giving the machine a set of instructions that it follows precisely to make everything from toys to car parts.