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The transistor, a semiconductor device used to amplify or switch electronic signals, was invented in 1947.

ARPANET, the precursor to the Internet, was commissioned by the U.S. Department of Defense for research use in 1969.

The microprocessor, a compact unit containing a computer's central processing logic, was developed in 1971.

The first personal computers, which were intended for individual use, emerged in the early 1970s with devices like the Kenbak-1 and the later Apple II in 1977.

Ethernet, a system for connecting computers within a local area network (LAN), was co-invented by Robert Metcalfe and David Boggs in 1973.

The first mobile telephone call was made by Martin Cooper, an engineer at Motorola, in 1973 using a handheld device.

The Apple Macintosh, known for its graphical user interface, was released in 1984.

Microsoft released its first version of Windows, a graphical operating system shell for MS-DOS, in 1985.

Tim Berners-Lee introduced the World Wide Web to the public in 1991, making the Internet widely accessible.

The IBM Simon, considered the first smartphone, was released in 1994.

Google, the company that would become a major force in the Internet search engine market, was founded in 1998.

Wi-Fi, a technology for wireless local area networking, was first released for consumer use in 1997.

Apple released the first iPod in 2001, changing the way consumers listened to music.

Facebook, a social networking site that would become one of the world's largest, was launched in 2004.

YouTube, a video-sharing platform, was activated in 2005.

Apple introduced the first iPhone, redefining the smartphone industry, in 2007.

The Bitcoin white paper, titled 'Bitcoin: A Peer-to-Peer Electronic Cash System' authored by Satoshi Nakamoto, was published in 2008.

Apple released the first iPad, a tablet computer that further impacted digital media consumption, in 2010.

The Tesla Model S, a fully electric luxury sedan featuring advanced software technology, was launched in 2012.

The first known instance of a working gun being 3D printed was in 2013.

The Amazon Echo, a smart speaker with the voice-controlled assistant Alexa, was released in 2015.

The Event Horizon Telescope captured the first-ever image of a black hole in 2019.

CRISPR, a tool for editing genomes with high precision, was first demonstrated to work in human cells in 2013.

SpaceX successfully completed its first crewed flight to the International Space Station with the Crew Dragon Demo-2 mission in 2020.