In pictures: Women who changed the tech world

ITP.net celebrates International Women's Day with the most inspirational women in technology
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Women from past and present who have impacted the world of technology.
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Augusta Ada King, Countess of Lovelace who was known as "Ada Lovelace," was an English mathematician and writer. She worked on a very early computer known as the Analytical Engine in the 1800s. She composed, what is recognised as the first algorithm for the engine and it now regarded as the first computer programmer.
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Hedy Lamarr, was an Austrian and American film actress and inventor, but at the beginning of World War II, Lamarr and composer George Antheil developed a radio guidance system for Allied torpedoes, which later allowed the creation of Bluetooth and Wi-Fi.
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Grace Hopper, was an American computer scientist and US Navy rear admiral, furthermore she was one of the first programmers of the Havard Mark I computer in 1944 to invent the first complier for a computer programming language, used by the likes of Microsoft. She believed that programming languages should use English rather than machine code.
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Radia Perlman, is most famous for her invention of the spanning-free protocol (STP) in the 1980s, which is instrumental to the connectivity used today. Dubbed as “mother of the Internet”, she currently works as a software designer and network engineer.
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Susan Kare, was one of the original employees of NeXt, a company formed by Steve Jobs. She is a graphics designer who created many of the interface elements for the Apple Mac in the 1980s, such as the icons, fonts and elements still used today. Her work includes, making the “Command” key icon, the “paint bucket” icon and the “Chicago” font.
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Sheryl Sandberg became the first woman to serve on Facebook’s board as the chief operating officer. Prior to Facebook, Sandberg was the vice president of global online sales and operations at Google and assisted in launching Google.org.
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Carly Fiorina dropped out of law school to begin her career at AT&T and became the company’s first female executive officer. Shortly after she became the CEO of Hewlett-Packard, the first woman to lead a top-20 Fortune 100 company. Until recently, she was a former presidential candidate in the 2016 Republican primaries.
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Martha Lane Fox, Baroness Lane Fox of Soho, CBE, is a British businesses woman who co-founded Lastminute.com in the dotcom boom.
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Ginni Rometty is the chairwoman, president and CEO of IBM, and the first woman to head the company. She has been named to Fortune magazine's "50 Most Powerful Women in Business" for ten consecutive years, ranking #1 in 2012, 2013 and 2014. Furthermore she was Forbes magazine’s “World’s 100 Most Powerful People” in 2014.