Static electricity is the buildup of an electric charge resting on a surface. This buildup may zap a component and cause damage. This is known as electrostatic discharge (ESD). ESD can be destructive to the electronics in a computer system.
Static electricity can build up on you as they walk across a carpeted floor. When you touch another person, you both receive a shock. If the discharge causes pain or makes a noise, the charge was probably above 10,000 volts.
At least 3,000 volts of static electricity must build up before a person can feel ESD, but less than 30 volts of static electricity can damage a computer component.
Preventing ESD Damage
Keep all components in antistatic bags until you are ready to install them.
Use grounded mats on workbenches.
Use grounded floor mats in work areas.
Use antistatic wrist straps when working on computers.
Climate affects computer equipment in a variety of ways:
If the environment temperature is too high, equipment can overheat.
If the humidity level is too low, the chance of ESD increases.
If the humidity level is too high, equipment can suffer from moisture damage.
Teaching Strategy: ESD is one of the potential dangers to computer equipment and data. Climate impacts probability of ESD. Devices that can protect the equipment from ESD damage include; antistatic mats, antistatic bags, and antistatic wrist straps.
Antistatic bags are somewhat electrically conductive, to eliminate differences in potential across the circuit boards stored in them. They are typically colored to indicate this.
If the conditions are conducive, consider letting a student demonstrate static electricity.
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