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What does UPS stand for?

From Catherine Roseberry, for About.com

Question: What does UPS stand for?
Answer: UPS is short for uninterruptible power supply. These devices are designed to protect your electronic equipment against power failures, unstable line power, electrical noise, surges, and other power events outside your control. UPS units will help eliminate the down time which can be caused by power problems, transient errors, and equipment damage.
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