Computer Basics

Free interactive guide to foundational computer architectures, internal hardware, and operating system principles.

Course Video Lectures & Notes

PC Anatomy & Architecture

Click on any hardware block below to explore its description and specifications.

CPU
RAM
STORAGE
MOTHERBOARD
GPU
Central Processing Unit (CPU)

The "brain" of the computer that executes software code instructions.

Role: Decodes and executes binary instructions. Speed is measured in Gigahertz (GHz).

Knowledge Check

Score: 0/5

Select your answers below and click Submit to check your basics score.

1. Which type of memory is volatile and loses contents when powered off?
2. What decimal value is represented by the binary number 101?
3. What is the primary function of the Operating System (OS)?