1. Software
1.1. OS (Operating System)
1.1.1. Windows
1.1.1.1. MS-DOS
1.1.1.2. Windows 1.0
1.1.1.3. Windows 2.x
1.1.1.4. Windows 3.0
1.1.1.5. Windows 95
1.1.1.6. Windows NT
1.1.1.7. Windows ME
1.1.1.8. Windows XP
1.1.1.9. Windows Vista
1.1.1.10. Windows 7
1.1.1.11. Windows 8
1.1.1.12. Windows 8.1
1.1.1.13. Windows 10
1.1.2. MacOS
1.1.2.1. MacOS System 1
1.1.2.2. MacOS System 3
1.1.2.3. MacOS System 7
1.1.2.4. MacOS 7.6
1.1.2.5. MacOS 8
1.1.2.6. MacOS 9
1.1.2.7. MacOS 10
1.1.2.7.1. MacOS X Cheetah
1.1.2.7.2. MacOS X 10.1 Puma
1.1.2.7.3. MacOS X 10.2 Jaguar
1.1.2.7.4. MacOS X 10.3 Panther
1.1.2.7.5. MacOS X 10.4 Tiger
1.1.2.7.6. MacOS X 10.5 Leopard
1.1.2.7.7. MacOS X 10.6 Snow Leopard
1.1.2.7.8. MacOS X 10.7 Lion
1.1.2.7.9. MacOS X 10.8 Mountain Lion
1.1.2.7.10. MacOS X 10.9 Mavericks
1.1.2.7.11. MacOS X 10.10 Yosemite
1.1.2.7.12. MacOS X 10.11 El Capitan
1.1.2.7.13. MacOS X 10.12 Sierra
1.1.2.7.14. MacOS X 10.13 High Sierra
1.1.2.7.15. MacOS X 10.14 Mojave
1.1.2.7.16. MacOS X 10.15 Catalina
1.1.2.8. MacOS 11 Big Sur
1.1.3. Linux
1.1.3.1. Debian Linux
1.1.3.2. Ubuntu Linux
1.1.3.3. Redhat Linux
1.1.3.4. CentOS Linux
1.1.3.5. Slackware Linux
1.1.3.6. SuSe Linux
1.1.3.7. Linux Mint
1.1.3.8. Fedora Linux
1.1.3.9. Caldera Linux
1.1.3.10. Mandriva Linux
1.1.3.11. Kali Linux
1.1.3.12. Manjaro Linux
1.1.3.13. Parrot OS Linux
1.1.4. UNIX
1.1.4.1. A/UX
1.1.4.2. Domain/X
1.1.4.3. Darwin
1.1.4.4. CTIX
1.1.4.5. Distrix
1.1.4.6. UniCOS
1.1.4.7. DG/UX
1.1.4.8. Digital UNIX
1.1.4.9. Ultrix
1.2. Program Computer
1.2.1. Graphic Application
1.2.1.1. Adobe Photoshop
1.2.1.2. Adobe Illustrator
1.2.1.3. CorelDRAW
1.2.1.4. Corel Painter
1.2.1.5. Clip Studio Paint
1.2.2. Word Processor
1.2.2.1. Microsoft Word
1.2.2.2. Open Office
1.2.2.3. Notepad
1.2.2.4. Wordpad
1.2.3. Spreadsheet
1.2.3.1. Microsoft Excel
1.2.3.2. Quattro Pro
1.2.3.3. Lotus Symphony
1.2.4. Data Processor
1.2.4.1. DBase
1.2.4.2. Microsoft Access
1.2.4.3. FoxPro
1.2.5. Desktop Publishing
1.2.5.1. Microsoft Publisher
1.2.5.2. Adobe Indesign
1.2.5.3. Ventura Publisher
1.2.6. Multimedia Application
1.2.6.1. GOM Player
1.2.6.2. VLC Player
1.2.6.3. Windows Media Player
1.2.7. Internet Application
1.2.7.1. Mozilla Firefox
1.2.7.2. Google Chrome
1.2.7.3. Baidu Browser
1.2.7.4. Microsoft Edge
1.2.8. Shop Application
1.2.8.1. LEMPOS
1.2.8.2. Venapos
1.2.8.3. LENERP
2. Hardware
2.1. RAM (Random Access Memory)
2.1.1. Dynamic RAM
2.1.2. SD RAM
2.1.3. DDR RAM
2.1.4. RD RAM
2.2. PSU (Power Supply Unit)
2.2.1. AT
2.2.2. ATX
2.2.3. BTX
2.3. GPU Card (Graphic Processing Unit)
2.3.1. GPU On-board
2.3.2. GPU Add-on
2.4. CPU (Core Processing Unit)
2.4.1. Intel
2.4.2. ARM
2.4.3. AMD
2.4.4. Apple
2.4.5. Cyrix VIA
2.4.6. IBM
2.4.7. IDT
2.4.8. Transmeta
2.4.9. Single Core
2.4.10. Dual Core
2.4.11. Quad Core
2.5. Cooling System
2.5.1. Fan System
2.5.2. Water Cooling System
2.6. Storage System
2.6.1. HDD (Harddisk)
2.6.2. SSD (Solid State Drive)
2.6.3. Floppy Disk
2.6.4. Flashdisk
2.6.5. Memory Card
2.6.5.1. CF (Compact Flash)
2.6.5.2. MMC (MultiMedia Card)
2.6.5.3. SD (Secure Digital)
2.7. PC Case
2.7.1. Casing Rackmount
2.7.2. Casing SFF (Small Form Factor)
2.7.3. Casing Large Server
2.7.4. Casing Desktop
2.7.5. Casing Slim
2.7.6. Casing Full Tower
2.8. Monitor
2.8.1. CRT (Cathode-Ray Tube)
2.8.2. LCD (Liquid Crystal Display)
2.8.2.1. TN (Twisted Nematic)
2.8.2.2. IPS (In-Plane Switching)
2.8.2.3. VA (Vertical Alignment)
2.8.3. TFT (Thin Film Transistor)
2.8.4. LED (Light-Emitting Diode)
2.8.5. OLED (Organic Light-Emitting Diode)
2.8.6. DLP (Digital Light Processing)
2.8.7. Touchscreen Monitor
2.8.8. Plasma Monitor
2.9. Mouse
2.9.1. Mechanical Mouse
2.9.2. Optomechanical Mouse
2.9.3. Optical Mouse
2.9.4. Bus Mouse
2.9.5. Serial Mouse
2.9.6. PS/2 Mouse
2.9.7. USB Mouse
2.9.8. Wireless Mouse
2.10. Keyboard
2.10.1. Keyboard Maltron
2.10.2. Keyboard KLOCKENBERG
2.10.3. Keyboard DVORAK
2.10.4. Keyboard AZERTY
2.10.5. Keyboard QWERTY
2.10.6. Keyboard Alphabetic
2.10.7. Keyboard Numeric
2.10.8. Serial Keyboard
2.10.9. PS/2 Keyboard
2.10.10. Wireless Keyboard
2.10.11. USB Keyboard
2.11. Sound System
2.11.1. Headset
2.11.1.1. Wired Headset
2.11.1.2. Wireless Headset
2.11.1.3. Headset
2.11.1.4. Headphone
2.11.1.5. Earphone
2.11.1.5.1. IEM (In Ear Monitor)
2.11.1.5.2. Earbud
2.11.1.5.3. Earfit
2.11.1.6. Backphone
2.11.2. Speaker
2.11.2.1. Speaker Active
2.11.2.2. Speaker Passive
2.11.2.3. Sub Woofer
2.11.2.4. Woofer
2.11.2.5. Speaker 3 Way
2.11.2.5.1. Mid Range
2.11.2.5.2. Tweeter
2.11.2.5.3. Full Range
2.11.2.6. Speaker 2 Way
2.12. Motherboard
2.12.1. Motherboard ATX
2.12.2. Motherboard Micro ATX
2.12.3. Motherboard Mini ITX
2.12.4. Motherboard E-ATX
3. Job Related
3.1. Computer Technician
3.2. Data Analyst
3.3. System Analyst
3.4. Programmer
3.5. Database Administrator
3.6. Game Developer
3.7. IT Consultant
3.8. UX Designer
3.9. Software Engineer
3.10. Web Designer
4. Type
4.1. Super Computer & Mainframe
4.2. MiniComputer
4.3. Workstation
4.4. Personal Computer
4.4.1. Tower Model
4.4.2. Desktop Model
4.4.3. Notebook Computer
4.4.4. Laptop Computer
4.4.5. Subnotebook Computer
4.4.6. Hand-held Computer
4.4.7. Palmtop
4.4.8. PDA