1. Hardware
1.1. System Unit
1.1.1. Contains electronic component of computer used to process data
1.1.1.1. Processor
1.1.1.2. Memory
1.1.1.3. Video card
1.1.1.4. Sound card
1.1.1.5. Power Supply
1.1.1.6. Drive Bay
1.2. Input
1.2.1. Any data and instructions entered into the memory of the computer
1.2.1.1. Keyboard
1.2.1.2. Pointing device
1.2.1.3. Mouse
1.2.1.4. Pen input
1.3. Output
1.3.1. Data that has been processed into a useful form
1.3.1.1. Display device
1.3.1.2. Printers
1.3.1.3. Speakers
1.3.1.4. Headphones
1.4. Storage Devices
1.4.1. Holds data, instructions and information for future use
1.4.1.1. Storage
1.4.1.1.1. Hard disk
1.4.1.1.2. Memory card
1.4.1.1.3. USB flash drive
1.4.1.1.4. Optical disk
1.4.1.2. Memory
1.4.1.2.1. RAM
1.4.1.3. Others
1.4.1.3.1. Tape
1.4.1.3.2. Magnetic stripe and smart card
1.4.1.3.3. Microfilm and microfilche
1.4.1.3.4. Enterprise storage
2. Software
2.1. System Software
2.1.1. Programs that control operation of the computer and it devices detect
2.1.1.1. Operating System
2.1.1.1.1. Functions
2.1.1.1.2. Types
2.1.1.2. Utility programs
2.1.1.2.1. system software that allows a user to perform maintenance-type task