• A "computer" is a system! A computer system contains a central processing unit (CPU), system memory (DRAM), Basic Input/Output System (BIOS), disk controllers, input and output ports (I/O), various disk drives, video subsystems, input devices (keyboard, mouse), output devices (printers, plotters), network interfaces, etc. -- all under the control of an operating system (Windows, Unix, etc.) and running a series of application programs. Individually, the components are useless, together they function as a complete system. If you want to learn more, please go here ... Follow the links. This may be a bit oversimplified, but should give you a rough idea of how the system functions.
  • A computer is as much as system as is a car. Both are collections of a variety of parts, assembled, controlled by predefined functions and resulting in a functioning whole.

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