Understanding the 3 Core Components of a Computer
A computer has three main parts: the CPU, Memory, and I/O devices. They talk to each other using a path called the Bus.
1. CPU (The Brain)
The CPU processes all the information.
ALU: Does math (like 1+1) and makes logic decisions.
Control Unit: Tells all other parts what to do.
Registers: Very small and super fast spaces to hold data for a moment.
2. Memory (Storage)
Main Memory (RAM): Holds the programs you are using right now. It is fast but forgets everything when the power is off.
External Memory (SSD/HDD): Saves your files safely even when the computer is off.
3. I/O Devices (Input & Output)
Input: How you give information to the computer (Keyboard, Mouse).
Output: How the computer shows results to you (Monitor, Speakers).
4. System Bus (The Highway)
The Bus is like a road where data travels between parts.
Data Bus: Carries the actual information back and forth.
Address Bus: Tells the computer where the data should go.
Control Bus: Sends "start" or "stop" signals to the devices.
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