F 3A Mandy Wong 32

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F 3A Mandy Wong 32

• Components of a Computer

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Components of a Computer

• Input device
• Central Processing Unit (CPU)
• Main memory
• Backing store
• Output device

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Input Devices

• Keyboard
• Mouse
• Scanner
• Joystick
• Light Pen
• Graphic Tablet

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CPU

• It is the heart of the computer system.
• Its main function is to accept and execute
  instructions.
• Ina computer , all processing is carried out by
  the CPU.

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Main Memory

• Random Access Memory (RAM)
• Read Only Memory (ROM)

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Backing Stores

• Floppy disk
• Hard disk
• Magnetic tape
• CD-ROM

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Output Devices

• Visual Display Unit (Monitor)
• Printer
• Plotter
• Sound synthesizer

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