Computer Hardware Basics by opunxrasta


									Computer Hardware

                      Aaron Kaiser
               Computer Technician
Intro To Computer Hardware
• Hardware Basics
• Installing New Hardware
• Dangerous Parts on
• Hardware “Killers”
If you are going to take apart any
  school computers/equipment,
  please consult Rob, Ken, or
  Aaron before you begin.
The system board, also referred to as the
 “main board” or “motherboard” contains all
 of the elements that are central to the
 operation of the computer including the
 CPU, expansion slots, memory, and
 components which connect to other
           Central Processing Unit

The central chip to the operation of the computer. The CPU
  processes the instructions from the software. A CPU can be
  from several different manufacturers, examples include a
  Pentium II, an AMD Athlon, or a PowerPC. CPU speeds are
  measured in Megahertz. The higher the Megahertz, the faster
  the chip. For example, a Pentium III running at 800 MHz is
  faster than a Pentium III running at 700 MHz.

Newer chips are measured in GHz (Gigahertz), which is simply
  1000 MHz. A 1.2 GHz chip is 1,200 MHz.
The place for storages of software, computer
  instructions, and operations while the computer
  is operating. RAM is a very fast storage location;
  though it loses all of its information with a loss of

Make sure that when you add memory, it is the
 correct type and speed for the motherboard.
               Hard Drive
Main storage device for
  the computer.
At the simplest level, a
  hard disk is not that
  different from a
  cassette tape. Both
  hard disks and
  cassette tapes use
  the same magnetic
  recording techniques.
     Installing New Hardware
• Expansion Bus
  – PCI
  – ISA
  – AGP
• Common problems
  – Wires
  – Not fully seated
Do Not Try To Fix The Following! They Can
  Be Lethal! Your safest route is to replace
  them or consult a certified technician.
• Power Supply
• Monitor
• Laser Printers
  – Power supply
       Hardware “Killers”
• Electrostatic Discharge (ESD)
   – Wrist Strap
   – Touch Casing
• Lightning
   – Surge Protectors are USELESS!!
   – Unplug computer and modem
• Moisture
• Heat
   – Clean out dust
   – Make sure all expansion ports closed

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