A computer system comprises people hardware software and what?

A computer system is hardware and software the people use to complet a task. Example: The average computer system at home is a monitor, tower (PC), keyboard and mouse. All these things you and physically touch. The software is what's installed in the hardware. You cannot physically touch software.

When you turn on the computer you press a power button, that's part of the hard-ware. What you see displayed on the screen is the result of hardware and software working together translated to you in a way you can understand what the computer is doing so you can do what you need to do on the computer.