Computer Science

Checkpoints

• Commonly Used Operating Systems Elementry A beginner-friendly introduction to what operating systems are and a tour of the most common ones — Windows, macOS, Linux, Android, and iOS.
• How Programs Work Elementry A beginner-friendly look at what programs actually are, from the apps you tap every day to invisible background services and programs-within-programs.
• Network Introduction Elementry A beginner-friendly introduction to computer networks — how WiFi, wired Ethernet, Bluetooth, and cellular connections let devices talk to each other, and what 'the internet' really means.
• Parts of a Computer Elementry A beginner-friendly tour of the core hardware inside every computer — CPU, memory, storage, and I/O devices — and what role each one plays, whether you're using a tower PC, a laptop, or a tablet.
• Programming Languages Elementry A wide-ranging introduction to programming languages — what they are, why so many exist, and how different languages are built for different jobs, from building websites to powering critical infrastructure.
• Von Neumann Architecture Elementry Discover the elegant design principle behind almost every computer ever built: how the CPU, memory, and the fetch-decode-execute cycle work together to turn stored instructions into running programs.