* Monitor: Displays the output of the computer.
* Keyboard: Allows users to input text and commands.
* Mouse: Used for interacting with the graphical user interface.
* Case: Houses the main components of the computer.
* Power supply: Provides electricity to the computer.
* Motherboard: The main circuit board of the computer, connecting all other components.
* Central processing unit (CPU): Executes instructions and performs calculations.
* Random access memory (RAM): Temporary storage for data and programs currently in use.
* Hard disk drive (HDD): Stores the operating system, applications, and data.
* Optical drives (CD/DVD/Blu-ray): Used to read and write data to optical discs.
* Printers: Output devices that create hard copies of documents.
* Scanners: Input devices that capture images or documents.
* Speakers: Output devices that produce sound.
* Webcam: Camera used for video conferencing or recording.
While software (the instructions and data that tell the hardware what to do) is not physically visible, it's crucial for the computer to function. The operating system, applications, and files are all part of the software that runs on the hardware.
Therefore, the visible part of a computer system is the hardware, which encompasses all the physical components that make up the system.