1. Computer system
1.1. Software
1.1.1. Application software
1.1.1.1. Productivity Software
1.1.1.2. Communication Tools
1.1.1.3. Creative Software
1.1.1.4. Web Applications
1.1.2. System software
1.1.2.1. Operating system
1.1.2.2. Utilities
1.2. Hardware
1.2.1. Input Devices
1.2.1.1. Keyboard
1.2.1.2. Mouse
1.2.1.3. Scanner
1.2.1.4. Microphone
1.2.1.5. Touchscreen
1.2.2. Output Devices
1.2.2.1. Monitor
1.2.2.2. Printer (Inkjet, Laser)
1.2.2.3. Speakers
1.2.2.4. Projector
1.2.3. Storage Devices
1.2.3.1. Primary Storage (Volatile)
1.2.3.1.1. (Random Access Memory) RAM
1.2.3.1.2. Cache Memory
1.2.3.2. Secondary Storage (Non-volatile)
1.2.3.2.1. Hard Disk Drive (HDD)
1.2.3.2.2. Solid State Drive (SSD)
1.2.3.2.3. USB Flash Drive
1.2.3.2.4. Optical Discs (CDs, DVDs)
1.2.3.2.5. Read-Only Memory (ROM)
1.2.3.2.6. Flash Memory
1.2.4. Processing Units
1.2.4.1. Central Processing Unit (CPU)
1.2.4.1.1. Arithmetic Logic Unit (ALU)
1.2.4.1.2. Control Unit (CU)
1.2.4.1.3. Registers
1.2.4.2. Graphics Processing Unit (GPU)
1.2.5. Motherboard
1.2.5.1. Chipset:
1.2.5.2. Expansion Slots
1.2.5.3. Power Connectors
1.2.6. Power Supply (PCU)
2. The Internet
2.1. Network Devices
2.1.1. Router
2.1.2. Switch
2.1.3. Modem
2.1.4. Firewall
2.1.5. Host
2.1.6. Hotspot
2.1.7. Server
2.2. Web and Browsing
2.2.1. Web Browser
2.2.2. Search Engine
2.2.3. Cookies
2.2.4. Bandwidth
2.3. Internet Protocols and Technologies
2.3.1. Internet Protocol (IP)
2.3.2. Transmission Control Protocol (TCP)
2.3.3. HTTP/HTTPS (Hypertext Transfer Protocol/Secure)
2.3.4. File Transfer Protocol (FTP)
2.3.5. URL (Uniform Resource Locator)
2.3.6. Domain Name
2.3.7. World Wide Web (WWW)