Study software (programs) and hardware (electronics) and how they are integrated into the design of systems. Look at a wide field of applications, to see what systems are needed, and then go into how they can best be provided. See not only what is needed now, but how things actually work, and how they may work in the future.
Investigate how human reasoning and behavior can be imitated, and even surpassed, by computer systems: in language understanding, vision, and games.
Learn how software and hardware can be embedded within mobile phones, MP3 players, cars and medical equipment. And much more!