What is a Computer?
A computer takes input, processes it with a CPU using memory, keeps results in storage and returns output.
Beginner 4 min IT Fundamentals
Hover a node to trace its connections · click or press Enter for a short explanation
What you are looking at
The same five roles exist in a phone, a laptop and a rack server — only the scale differs.
Memory is fast but temporary; storage is slower but keeps data without power.
Why it matters
- Almost every performance problem traces back to one of these parts: not enough CPU, not enough memory, or slow storage.