In 1994 is the year when the standard Bluetooth was conceived by Dr. Jaap Haartsen at Erricsson. It was named after king Harald 'bluetooth' who united Denmark and Norway in the 10th century. He was nicknamed Bluetooth because he had a front teeth that was blue in colour.
It was designed to replace a much older standard, RS-232telecommunication cables that was conceived in 1960. Bluetooth uses short range UHF radio waves between 2.4 and 2.5GHz.
When you look closely the Bluetooth logo is a combination of 'H' and 'B' the initials of Harald 'bluetooth'.
Bluetooth technology is a short range wireless communication technology that replaces cables in connecting electronic devices e.g use of wireless mouse and maybe receiving phone calls via a handset.
Bluetooth uses a band centered at 2.4 gigahertz the same range of frequencies used by Wi-Fi and microwaves. The Bluetooth uses a frequency-hopping transceiver to combat interference. That is why you can connect different devices without interference. You can use your Bluetooth headphones and at the same time connect your PC with a wireless mouse without interfering with one another.
Bluetooth technology is always managed by a topology known as Star Topology. It's a type of topology where there is a master and up to seven slaves to form a piconet. Each slave 'slave' has a unique address and the center core Bluetooth system uses the frequency-hopping technique.
Meaning no device will interfer with the other.
Bluetooth technology uses the principle of 'inquiry' and 'inquiry scan'. The scanning device listen in on known frequencies for devices that are actively inquiring.After the inquiry is received the scanning device sends a response by send an information needed.
Imagine a world with no Bluetooth. There will be cables everywhere ,cables sacks at times.
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