1. backup and restore
2. store instructions waiting to be excecuted by the processor
3. OUTPUT DEVICE
4. sound card
5. MEMORY
5.1. function
5.2. type
5.2.1. Volatile (RAM)
5.2.1.1. temporary: loses its contents when the power is turned off
5.2.1.1.1. types
5.2.2. Nonvolatile (ROM)
5.2.2.1. parmanentlyL does not lose contents when the power turned off
5.2.2.1.1. types
6. ADAPTER CARD
6.1. FUNCTION
6.1.1. Ehances functions of a component of the system unit and/or provides connection to peripherals
6.2. type
6.2.1. firewire card
6.2.2. modem card
6.2.3. network card/ NIC
6.2.4. USB card
6.2.5. Video/ graphic card
6.2.6. MIDI card
6.2.7. TV tuner card
6.2.8. PC-to-TV converter card
7. PROCESSOR
7.1. COMPONENTS
7.1.1. CONTROL UNIT (CU)
7.1.1.1. provides connectors for other peripherals
7.1.2. ARITHMETIC LOGIC UNIT (ALU)
8. MOTHERBOARD
8.1. FUNCTION
8.1.1. Holds many components of the system
8.2. BASIC COMPONENT
8.2.1. Processor slot
8.2.2. Memory slot
8.2.3. Adapter card slot
9. HARDWARE
9.1. INPUT DEVICE
9.2. SYSTEM UNIT
9.3. STORAGE DEVICE
9.4. COMMUNICATION DEVICE
10. INFORMATION CODING SHEME ( ICS )
10.1. ASCII
10.2. EBCDIC
10.3. UNICODE
11. DATA VS INFORMATION
11.1. DATA
11.1.1. Data is raw, unorganized facts that need to be processed, such as character, number, text, video, image, audio.
11.2. INFORMATION
11.2.1. INFORMATION PROCESSING CYCLE
11.2.1.1. INPUT
11.2.1.1.1. the process of entering data into memory of computer
11.2.1.2. OUTPUT
11.2.1.2.1. the process of conveying information to the user
11.2.1.3. PROCESS
11.2.1.3.1. the process of transforming data into information
11.2.1.4. STORAGE
11.2.1.4.1. the process of saving data, programs, instruction or output for future use
11.2.2. Information is data that has been processed in such a away as to be meaningful to the person who receives it. Value added to data such as summarize, organize and analyze.
12. DATA REPRESENTATION
12.1. Bit
12.2. Byte
13. NUMBER SYSTEM
13.1. Decimal (Base 10)
13.2. Binary (Base 2)
13.3. Hexadecimal (Base 16)
14. STORAGE
14.1. TYPES
14.1.1. magnetic storage
14.1.2. optical storage
14.1.3. flash memory
14.2. STORAGE CAPACITY
15. LOGIC GATE
15.1. AND
15.2. OR
15.3. NOT
15.4. NAND
15.5. NOR
16. SOFTWARE
16.1. TYPES
16.1.1. SYSTEM SOFTWARE
16.1.1.1. utility program
16.1.1.1.1. types
16.1.1.2. Operating system
16.1.1.2.1. types
16.1.1.2.2. function
16.1.2. APPLICATION SOFTWARE
16.1.2.1. types
16.1.2.1.1. web browser
16.1.2.1.2. word processing
16.1.2.1.3. spreadsheet
16.1.2.1.4. database
16.1.2.1.5. presentation