What is a computer system?

A computer system is a collection of hardware and software that works together to perform tasks. The term "system" refers to the interconnection of individual components. 

A computer system includes the hardware, operating system (main software), and peripheral equipment needed for full operation. It also includes five main hardware components: input, processing, storage, output, and communication devices. 

Examples of computer systems include mobile phones, keyboards, touchscreens, barcode scanners, touchpads, library systems, emails, holiday bookings, shop tills, and the internet.