On 10th May 1954, Gordon Kidd Teal created a sensation at an Institute of Radio Engineers conference when he presented silicon transistors for the first time by announcing they were ready for production and available for sale.
Why The Big Deal?
Originally, germanium was mainly used to develop transistors. It was easier to work with but had some major limitations, one of those being their operational temperature ranging from 0°C to 70°C. Silicon transistors allowed higher operational temperatures of -55°C to 125°C, meaning they could be relied upon in many more environments and applications. Not only that but silicon has better stability and is much more abundant (and cheaper).