1. CPU - Central Processing Unit(CPU) is a microprocessor which carries out all the tasks of computer.
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2. RAM - Random Access Memory(RAM) is the memory available for programs to run on a computer.
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3. Hard Drive - It is the part of computer where all the data is stored
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4. Power Supply - Power supply is a unit which distributes power to all the components of computer.
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5. Motherboard - Its the most important part of computer. Motherboard holds the CPU as well as all the external slots, with circuits running over it.
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6. USB Port - Universal Serial Bus(USB) is one of the most popular ports used today. It is used to connect external devices to the computer.
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7. ps/2
8. Graphic Card - Graphic Card is a dedicated processor optimized for improving graphic performance.
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cross fire
cooling device
network cards
sound cards
dvi/vga ports
optical drives
videocapture card
ide cable
sata cable