You are telling the compiler: Set aside a chunk of memory x. Use the details you call X for operations with it. The computer itself doesn't know anything abou

You are telling the compiler: Set aside a chunk of memory x. Use the details you call X for operations with it. The computer itself doesn't know anything about types or anything else - its just some detail for the compiler to use while generating instructions. A type isn't a thing - it's not an object. It's just a set of constraints that detail valid and invalid uses for the variable.