3 Bluetooth
This us a universally recognized symbol used on devices that use Bluetooth technology. However, despite being a recent invention, the story of the Bluetooth symbol dates back to 10th century. Danish King Harald Blatand was known to be a peaceful and just king amongst his population. He loved blueberries and Bluetooth got its symbol from the letters B and H of those times being amalgamated together.
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4 Medicine symbol
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Ever since the Red Cross won the right to use the big red plus sign as its official symbol, the medical fraternity has gone back to using its oldest symbol of two snakes entangled around a staff. This symbol is made after a real staff that was supposed to have the powers to make any arguments solved. It is also called the Rod of Asclepius, who was the god of healing and has just one snake and non wings.
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5 The power symbol
This symbol is seen on almost every computer in the world and on most of the electronic appliances out there. The symbol comes from the binary numbers 1 and 0, as 1 denotes on and 0 denotes off. Hence the symbol has both on and off on it.
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