ESD takes place only when two objects that store different amounts of static electricity come in contact. Happens in placed that are dry, cool environments.

EMI Its when a magnetic field interferes with an electronic device. This is bad for Hard drive, floppy disks, and CRT monitors.

RFI occurs when radio emitting devices, such as cell phones and microwave ovens even your cordless phone. ever hear a crackling sound on your speakers? yes, that is a RFI. If you have your cell phone near you and you get a call or text, that crackling sound in your computer speaker is the RFI. If you have a wireless connection and you have a cordless phone and they are on the same frequency you will have what is called Radio Frequency Interference or RFI. Keep any radio emitting device far away from your computer.

Just some helpful tips.

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