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1. Scrambled Word: TERICBOMI
2. Scrambled Word: LLBECSHOLO
3. Scrambled Word: MOCRETNI
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The first electric alarm system was patented in 1853 by Augustus Russell Pope. It used an electromagnet to ring a bell when a door or window opened!
Modern automatic school bells can be programmed with complex schedules, accounting for different days, holidays, and special events, ensuring precision.
No two fingerprints have ever been found to be identical – not even those of identical twins! This is why they are great for biometric security.
The earliest intercoms, known as "speaking tubes," were acoustic devices used in the late 19th century before electric versions became common.
CCTV was first used in Germany in 1942 by Siemens AG to observe V-2 rocket launches, not initially for public surveillance as it's known today.