Bluetooth Versions
Version 1.1 and earlier
Since the Bluetooth protocol was introduced in 1998, different specification versions have been released. Versions 1.0 and 1.0B had more than acceptable issues and problems for manufacturers to develop devices for Bluetooth. The number 1 problem was the lack of communication among the devices.
The core specification version 1.1 is the first successful operating version of Bluetooth. Version 1.1 corrected a majority of the bugs and problems found in former versions.
Version 1.2
Many of the latest Bluetooth devices, like the newer cell phones are being sold with the newer Bluetooth version 1.2. This version offers backward compatability with Bluetooth 1.1, faster transmission speeds, received signal strength, as well as a host controller interface (HCI) support for 3 wire UART.
Bluetooth version 2.0
Yes, it's a proven fact that there exist multiple communication technologies, but they all share one common trait - faster is better. Bluetooth specialists realized this, and in consequence worked on improving the speeds of version 1.2.
The most recent version, version 2.0 + EDR (Enhanced Data Rate) has been launched in 2004 and could be bought in late 2005. Version 2.0 delivers data transfer rates of up to three times that of the first version of Bluetooth. Version 2.0 also delivers better connectivity.
With Bluetooth 2.0 + EDR, you can run more devices simultaneously - with increased efficiency.
Computers and even computer related units are expected to be some of the first devices to encorporate Bluetooth 2.0 + EDR, followed naturally by audio and imaging devices. Version 2.0 is backward compatible with older versions, three times faster, and supplies a higher data rate of 2.1 MB a second.
It also offers broadcast and multicast support, along with a further enhanced bit error rate performance, making it the greatest Bluetooth the world has ever seen.
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