What term describes all physical components of a computer system?

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The term that describes all physical components of a computer system is hardware. This category includes tangible elements such as the computer's central processing unit (CPU), memory modules, hard drives, motherboards, graphics cards, and peripherals like keyboards and mice. Hardware represents the foundational elements that allow a computer to function and execute software applications.

Software, on the other hand, refers to the programs and operating systems that run on the hardware, enabling users to perform tasks on the computer. Network pertains to the interconnections between multiple computer systems that allow for data communication, while firmware refers to specialized software programmed into hardware to control specific functions, but it is not the encompassing term for all physical components. Therefore, hardware is the most accurate term to describe all physical aspects of a computer system.