How IDE developed?

Question

If we use IDE to develop apps then how the first IDE developed ?

Answer 1

IDE is just editor. Gives you coding atmosphere

Answer 2

We don't use IDE to develop apps, IDE is just an environment, it's not what makes the code run, you can use any programming language outside of IDE. So your question should be: How are programming languages developed ? Programming languages are turned to machine language in 0s and 1s. If you want to read more about it, use google.

Answer 3

You don't need an IDE to develop an IDE. The first one would have been developed on a text editor.