As someone who hasn't taken CS classes, I was surprised to learn that what I'd assumed was CS is classified as Electrical Engineering (Designing processors, IC

As someone who hasn't taken CS classes, I was surprised to learn that what I'd assumed was CS is classified as Electrical Engineering (Designing processors, ICs etc), and Physics (concepts like reversible computing, quantum computing, the works of Turing, Feynman, and Shannon.) I still don't have a grasp on what characterizes CS.