0b ) what are the four fundamental parts of a computer?

The four fundamental parts of a computer (often referred to as the components of the computer system) are:

Role: Acts as the "brain" of the computer, performing calculations, executing instructions, and processing data.
Components:
- Control Unit (CU): Directs the flow of data and instructions.
- Arithmetic Logic Unit (ALU): Handles mathematical and logical operations.
Key Feature: Determines the computer's processing power and speed.

Role: Stores data and instructions for processing. It’s divided into:
- Primary Memory (RAM):
  - Temporary and volatile storage used for actively running programs and processes.
  - Data is lost when the computer is turned off.
- Secondary Memory (ROM):
  - Permanent and non-volatile storage containing essential system instructions (e.g., boot firmware).
Key Feature: Faster access than storage devices but limited in size compared to secondary storage.

Input Devices: Allow users to interact with the computer by providing data or instructions.
- Examples: Keyboard, mouse, microphone, scanner.
Output Devices: Display or produce the results of the computer’s processes.
- Examples: Monitor, printer, speakers.
Key Feature: Serve as the interface between the user and the computer system.

Role: Retains data and programs for long-term use, even when the computer is off.
Types:
- Hard Disk Drive (HDD): Mechanical storage with large capacity but slower speed.
- Solid-State Drive (SSD): Faster storage with no moving parts, increasingly common.
- External Storage: USB drives, external hard drives, or cloud storage.
Key Feature: Non-volatile and used for storing files, applications, and operating systems.

These components work together to process data, execute tasks, and interact with the user:

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