About Computers
Technology is built from physical materials, scientific principles, design choices, software, infrastructure, and human decisions. This page explains the core ideas without turning the topic into a how-to manual for unsafe behavior.
Processor
The CPU executes instructions.
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RAM stores data programs need quickly.
Learn MoreInput
Input devices send information into a computer.
Learn MoreOutput
Output devices present or transmit results.
Learn MoreSoftware
Software is the instructions and data that direct hardware.
Learn MoreOperating Systems
Operating systems coordinate hardware and applications.
Learn MoreBinary
Digital computers represent information with bits.
Learn MoreNetworks
Computers exchange data through networks.
Learn MoreProcessor
Modern processors contain billions of transistors organized into cores, caches, and arithmetic circuits.
Memory
RAM is fast but usually temporary, while storage such as solid-state drives keeps files longer.
Input
Keyboards, touchscreens, cameras, microphones, sensors, and networks all provide data.
Output
Displays, speakers, printers, motors, lights, and network connections turn digital results into useful forms.
Software
Applications perform user tasks, while system software manages hardware and services.
Operating Systems
They manage memory, files, devices, users, processes, permissions, and interfaces.
Binary
Patterns of 0s and 1s can encode numbers, text, images, sound, and instructions.
Networks
Local networks connect nearby devices, while the Internet connects many separate networks globally.