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Def : A computer case is also known as a computer chasis / tower / base unit / system unit

- contain electronic component of the computer used to process data

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Def : Main circuit board of the system unit, that contains intergrated circuits

Function :

- Hold many component system

i. Processor Sloth
- Houses the CPU and supplies electrical
ii. Adapter Card Sloth
- To hold adapter card
iii. Memory sloth

- To hold memory module

- Provides connectors for other peripherals

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Def : AKA Central Processing Unit (CPU)
- Interprets and carries out the basic instruction that operate a computer

Function : Direct and coordinates most of the operation in the computer

Component of Processor
i. Control Unit
ii. Arithmetic Logic Unit ( ALU )

Step 1 : Fetch

- Control Unit obtain the math's problem instruction and data from memory

Step 2 : Decode

- The Control Unit translate the math problems instruction and send the instruction and send to the ALU

Step 3 : Execute

- The ALU performs calculation an the Data

Step 4 : Store

- The results of the math problem are stored in memory (RAM)

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Def : Component that store instructions waiting to be executed by the processor

Function :
- Hold data, instruction and information for future use

VOLATILE
[ when computer turn off ]
- loses its content
- temporary
- RAM (Random Access memory)

NON VOLATILE
[ when computer turn off ]
- maintain its content
- permanent
- ROM (Read-Only Memory)
i. PROM
ii. EPROM
iii. EEPROM

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Input Def : Hardware component that allow user to enter data and instruction into a computer

Example :
- Keyboard
- Pointing Devices
- Digitizer
- Microphone

Output Def : Hardware component that conveys information to one or more people

Example :
- Display device
- Printer
- Speaker / Headphone / Earbuds
- Data projector

Input and Output Def : Hardware component that allow user to enter data and convey information in the same time

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Def : Computer Hardware that record and retrieves items to and from storage media

Function :
- Hold data permanently
- Data and Info are not processed
- located outside the motherboard

TYPES OF STORAGE

Magnetic Storage

i. Hardisk

Optical Storage

i. Compact Disk
ii. Digital Video Disc

Flash Memory

i. Memory Card
ii. USB Flash

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Def : Function of a component of the system unit  and provides connection to peripherals

Function :
- Device that connects to the system unit and is controlled by the processor in the computer

TYPES OF ADAPTER CARDS

Fire Wire

- Home users can transfer videos to computer

Modem

- Used to transfer digital information via analog system

Network

- Transfer variable lenght network packet from a source to a destination host via one or more network

Sound Card

- Providing the audio component for multimedia apps such as music composition editing and education

USB Card

- Use to read, copy and back up data from portable flash memory card

Video Card

- Able to create output images that can intergrated into the motherboard or CPU

MIDI

- Recording and playing back music on digital synthesiszer that is supported by many make of personal computer sound card

TV Tuner

- allows television signals to be received by a computer

PC to TV converter

- Support VGA resolution

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Def : (also called a program) is a set of instruction that tell the computer what tasks to perform and how to perform them