Computer Hardware
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Computer Hardware



A general introduction to computer hardware for students at the HS level.

A general introduction to computer hardware for students at the HS level.



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  • Explain further: Input devices Storage devices – HD Output devices
  • What is a chip? Contains and Integrated circuit, a very tiny piece of silicon with electronic circuits. CPU and Memory (RAM and ROM) come in chips.
  • One MHz represents one million cycles per second. For example, a microprocessor that runs at 200 MHz executes 200 million cycles per second. Each computer instruction requires a fixed number of cycles, so the clock speed determines how many instructions per second the microprocessor can execute. To a large degree, this controls how powerful the microprocessor is. One GHz represents 1 billion cycles per second.

Computer Hardware Computer Hardware Presentation Transcript

  • Computer Hardware Rita Ester
  • Computer
    • Hardware + Software
    • Electronic device that
    Takes data in Input devices Outputs information Output devices Stores data Storage devices Processes data CPU
  • Mother Board
    • contains the computer's basic circuits and parts
    BIOS BUS RAM CPU BUS BUS Battery Expansion Slots and Expansion Cards
  • BIOS
    • Basic Input Output System,
    • wakes up the computer when you turn it on (Boot process),
    • starts the operating system,
    • Is stored on a ROM chip.
      • Read Only Memory.
      • The battery supports the ROM chip.
  • Chip
    • Integrated circuit
    • Tiny piece of silicon with electronic circuits
    • CPU or memory (RAM and ROM) on a chip
  • CPU
    • Central Processing Unit
    • (Micro-)processor
    • Brain of the computer.
    • Processes data and instructions.
    • Contains the ALU.
      • Arithmetic Logic Unit
    • Has a clock rate.
      • Sets the computer speed.
      • Speed measured as MHz, GHz.
  • System Properties
  • RAM
    • Random Access Memory
    • Holds data and programs while the CPU uses them
    • Everything disappears when power is off
    • Types: SDRAM, RDRAM.
  • BUS
    • On the mother board
    • Path for data
  • Expansion Card
    • Expands the capabilies of the CPU
    • Example: Graphics card.
    • Sits in an expansion slot.