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The Bar code
This boring set of black and white lines was developed by Norman Woodland, but they can be found on almost every single item in the grocery store. At first glance, it seems hard to see how they could possibly make any impact on the world, but they have fundamentally changed the way we shop.
In 1454 the German goldsmith Johannes Gutenberg was the first to construct a press that comprised moveable metal type, which, when laid over ink, could print repeatedly onto paper. The introduction of computers in the 1950s revolutionized printing composition, with more and more steps in the print process being replaced by digital data. Now a days we have modern electronic printing presses in our homes and offices commonly known as “printers”.
A Russian, and the Italian-Irish inventor Guglielmo Marconi, saw the potential in this technology when they sent and received the first radio waves. Marconi sent the first transatlantic radio message (three dots for the letter “S”) in 1901. Since then Radio became an important part of our daily life, from listening to news bulletins to baseball matches, and even the invention of TV barely affected its significance.
So, you ran out of money. Don’t worry. Find an ATM! “Automated teller machines” were invented by John Shephed Barron, and the first ATM was introduced in June 1967 at Barclays Bank in Enfield, UK.
It is the greatest kitchen convenience in history. Before its conception, icehouses were used to provide cool storage for most of the year. The first refrigerator to see widespread use was the General Electric “Monitor-Top” refrigerator introduced in 1927.