Chapter 1 Vocab Words

Question 1

Electromagnetic pulse EMP

Answer 1

When electricity improperly jumps from one place to another in ways that cause damaged.

Example: lighting is a form of EMP

Question 2

Electrostatic discharge ESD

Answer 2

An ESD of most concern.

Passage of a static electrical charge from one item to another

Question 3

Electrostatic discharge ESD strap

Answer 3

• consists of a wire that connects on one end to an alligator clip and on the other end to a small metal plate that secures to your wrist with an elastic strap.
• snap the alligator clip onto any handy metal part of the computer and place the ESD strap on either wrist.

Question 4

Electrostatic discharge mat

Answer 4

Or ESD mat— acts as a point of common potential; its typical to purchase a combination ESD strap and mat that all connect to keep you, the computer, and any loose components at the same electrical potential.

take a picture of where the components go before you start removing so you know how to put them back

Question 5

Equipment grounding

Answer 5

If you don’t have a ESD strap and on you’re on a job, before working on a computer, take a moment to touch the power supply to ensure you are on the same electrical potential as the computer. Repeat every so often.

Question 6

Electromagnetic interference EMI

Answer 6

A magnetic field interfering with electronics

Nearly as dangerous as ESD but can cause permanent damage and or erase data.

Hard drives are susceptible to EMI

ANYTHING WITH A MOTOR HAS A MAGNET - even some screwdrivers have a magnet

Question 7

Radio frequency interference RFI

Answer 7

Can cause poor signal or may block signal completely. Will never cause any damage, but can be incredibly irritating

Many devices emit radio waves including …
- cell phones
- wireless network cards/access points
- cordless phones
- baby monitors
- microwave ovens