Main Components of a Computer:

1. Central Processing Unit (CPU)

• The brain of the computer, responsible for executing instructions and processing data.
• Consists of two main components:
* Control Unit: Fetches and decodes instructions from memory.
* Arithmetic Logic Unit (ALU): Performs mathematical and logical operations on data.
• Speed is measured in gigahertz (GHz).

2. Random Access Memory (RAM)

• Stores data and instructions that the CPU is currently using.
• Unlike storage devices, RAM is volatile, meaning data is lost when the computer is turned off.
• Capacity is measured in gigabytes (GB).

3. Storage Devices

• Permanently store data and programs, even when the computer is turned off.
• Types of storage devices include:
* Hard Disk Drive (HDD): Uses spinning disks to store data.
* Solid-State Drive (SSD): Uses flash memory to store data, providing faster speeds than HDDs.
• Capacity is measured in terabytes (TB).

4. Input Devices

• Allow users to interact with the computer.
• Common input devices include:
* Keyboard: For typing text and entering commands.
* Mouse: For navigating the graphical user interface (GUI) and selecting items.
* Microphone: For recording audio.
* Webcam: For capturing video and images.

5. Output Devices

• Display or print information from the computer.
• Common output devices include:
* Monitor: Displays images and text.
* Printer: Prints documents and images on paper.
* Speakers: Output sound.

Additional Components:

• Motherboard: Connects all the components of the computer together.
• Power Supply Unit (PSU): Provides power to the computer components.
• Graphics Card: Enhances the computer's ability to process and display graphics.
• Network Card: Connects the computer to a network.

These are the main components of a computer, which work together to perform a wide range of tasks.