Computers process data through a coordinated workflow involving input, memory, the CPU, and output. Here’s how it works:

1. The Data Processing Cycle

Computers follow four key steps to turn raw data into useful information:

1. Input → 2. Processing → 3. Storage → 4. Output

Example: Typing a Document

• Input: You press keys on a keyboard (H, e, l, l, o).
• Processing: CPU checks spelling, formats text (e.g., bold/italic).
• Storage: Saved to RAM (temporary) or SSD (permanent).
• Output: The word "Hello" appears on the monitor.

2. The CPU: The Brain of the Computer

The Central Processing Unit (CPU) does the actual "thinking" using:

• Cores: Like multiple brains (e.g., 4-core CPU = 4 workers).
• Clock Speed: Measured in GHz (how fast it processes).

How the CPU Works

1. Fetches instructions from RAM.
2. Decodes what action to perform (e.g., add numbers).
3. Executes the command.
4. Stores results back in RAM.