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PROTECTING YOUR COMPUTER SYSTEM

PROTECTING YOUR COMPUTER SYSTEM. General safety precautions :- Make notes Remove the packing tape and cellophane, A.S.A.P. Keep components away from your hair and clothing Keep screws and spacers in one place Don’t stack all the boards on top of each other

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PROTECTING YOUR COMPUTER SYSTEM

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  1. PROTECTING YOUR COMPUTER SYSTEM • General safety precautions :- • Make notes • Remove the packing tape and cellophane, A.S.A.P. • Keep components away from your hair and clothing • Keep screws and spacers in one place • Don’t stack all the boards on top of each other • Don’t touch the chips on the boards • Don’t touch a chip with a magnetized screwdriver • Don’t use a graphite pencil to DIP switch setting. • Turn off a computer before moving it • Keep away from magnetic fields

  2. STATIC ELECTRICITY • Electrostatic discharge (ESD) : - • commonly known as a static electricity • Refers to situation where an electrical charge at rest • ESD has various sources * when 2 object with dissimilar electrical charges touch, static electricity passes between them …. Until the dissimilar charges become equal

  3. STATIC ELECTRICITY You can either see or feel the discharge If you feel the charge - then you discharged at least 3,000 volts of static electricity - enough to damage electronic components • 2 types of damage in an electronics component:- • Catastrophic failure- destroy the component beyond use • Upset failure- damages the component so that it does not perform well (more difficult to detect)

  4. STATIC ELECTRICITY To protect your computer against ESD, always ground yourself before touching electronic components. • Types of static control devices:- • Ground bracelets / static strap • A strap you wear around your wrist. One end attaches to the grounded conductor such as the computer case or aground mat. • It also contains a resistor that prevents electricity from harming you

  5. GROUND BRACELET (STATIC STRAP)

  6. GROUND BRACELET (STATIC STRAP)

  7. STATIC ELECTRICITY • Types of static control devices:- • Ground mat • ground mat can come equipped with a cord to plug into a wall outlet to provide a grounded surface on which to work.

  8. GROUND MATS

  9. STATIC ELECTRICITY Types of static control devices:- 3. Static shielding bags New components come shipped in static shielding bag. Save it / recycle

  10. ELECTROMAGNETIC INTERFERENCE • commonly known as EMI • Cause by the magnetic field produced as a side effect when electricity flows • In radio frequency range (RFI), can cause problems with radio and TV reception • Data in data cables that is cross an electromagnetic field can be corrupted • PCs can transfer EMI to other nearby PCs. • PCs should be in cases

  11. SURGE SUPPRESSORS • Also known as surge protectors • Protects equipment from sudden changes in power level lightning strikes • Providing a row of power outlets and an on/off switch • Not always reliable.

  12. UNINTERRUPTIBLE POWER SUPPLY (UPS) • Provides backup power in events that the AC fails completely. • UPS offer several benefits:- • Provide backup power during a blackout • Protect against a very high spikes that could damage equipment • There are 3 types of UPS devices in market • Standby device • Inline device • Line-interactive device

  13. UNINTERRUPTIBLE POWER SUPPLY (UPS)

  14. INTELLIGENT UPS • Offer additional functions • Some of the additional functions are:- • Diagnose the UPS • Can monitor the quality of electricity received • Send alarm to prepare for a shutdown • Check for a weak battery • Close all servers protected by the UPS during a blackout • * Windows NT, windows 2000 and XP

  15. COMPUTER CASES • The form factor of a motherboard, power supply and case must all be match • It describe the size, shape and general makeup of hardware component • From the matching form factor for power supply and case assures you that:- • The power supply cords to the motherboards provide the correct voltage and it must match • The holes must align with the holes in the case for anchoring the board to the case • Holes in the case align with ports coming off the motherboard

  16. COMPUTER CASES • Sometimes called chasis, houses the power supply, motherboard, expansion card or drives • Has lights and switches • Generally, the larger the case, the larger power supply and the more amps it carries • Because it allows extra space and power for alrge number of devices • TYPES OF CASES:- • Desktop Cases • Tower Cases • Note book cases

  17. DESKTOP CASE • Also called as low-file or slim-line cases • Uses either NLX, LPX or Mini-LPX form factors

  18. TOWER CASE • Can go up to 2 feet high • Accommodate ATX, mini ATX and Baby AT • Has room for several devices • Good for user who anticipate upgrading, because can provide max space • Midsize tower – miditowers (most popular) • Accommodates a Baby AT or a full ATX system

  19. NOTEBOOK CASE • The cost and power varies widely • Notebook are design often for converse space • It uses less power and produce less heat • The case fan – attach to thermometer

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