A computer works by processing data through a combination of hardware and software components. Here's a brief overview of how it functions:

1. Input: The computer receives data or instructions from input devices like a keyboard, mouse, or microphone.

2. Processing: The Central Processing Unit (CPU) executes instructions from programs stored in memory. It performs calculations, makes decisions, and manages data flow.

3. Memory: Data and instructions are temporarily stored in Random Access Memory (RAM) for quick access by the CPU. Permanent storage, like a hard drive or SSD, holds data even when the computer is off.

4. Output: Processed data is sent to output devices like a monitor, printer, or speakers to present the results to the user.

5. Control: The operating system (e.g., Windows, macOS, Linux) manages hardware resources and provides a platform for software applications to run.

In short, a computer works by taking input, processing it using the CPU and memory, and producing output, all coordinated by the operating system and software.