Ada Lovelace's translation and extensive annotations of Babbage's Analytical Engine, published around this period, described what many now regard as the first computer algorithm.

Bill Hewlett and Dave Packard formally began Hewlett-Packard in a Palo Alto garage, a founding moment now revered as the birthplace of Silicon Valley.

Naval officer and computer scientist Grace Hopper's team taped a real moth found in the Harvard Mark II relay computer into their logbook, coining the enduring term 'bug.'

CBS conducted a landmark experimental color television transmission, part of the intense industry rivalry over which broadcast standard would define the American television future.

Researchers using IBM's Naval Ordnance Research Calculator, then the world's fastest computer, pushed to compute pi to unprecedented digits.

William Henry Gates III was born in Seattle, Washington, the future co-founder of Microsoft and architect of the personal computer software industry.

Engineers at UCLA successfully sent the first data transmission between two computers connected by the ARPANET, the precursor to the internet.

Engineers at UCLA connect the first two nodes of ARPANET, a Honeywell 516 minicomputer and a Sigma 7, launching the network that would become the internet.

Ken Thompson at Bell Labs completes early work on a file system and simple kernel running on a spare PDP-7 minicomputer, a foundational step toward Unix.

UCLA graduate student Charley Kline sent the first message over ARPANET to Stanford, crashing after typing just 'LO' of 'LOGIN'.

UCLA graduate student Charley Kline transmitted the first message over ARPANET to Stanford, and the system crashed after just two letters.

Engineers at Xerox PARC continued refining the Alto personal computer's bitmap display and mouse-driven interface, technology that would later define modern computing.

Steve Wozniak's refinements to the Apple II's color graphics and floating-point BASIC push the fledgling machine toward the design that would launch personal computing to the mass market.

Apple Computer completes its first batch of fifty Apple I computers, delivering them to the Byte Shop in Mountain View for retail sale.

Seymour Cray's Cray-1, the first commercially successful supercomputer, was delivered to Los Alamos National Laboratory, redefining scientific computation.

Shugart Associates introduced the 5.25-inch floppy disk, a cheaper, smaller alternative to 8-inch disks that would dominate personal computing for a decade.

Apple Computer begins shipping the Apple II, one of the first mass-market personal computers, to retail stores across the United States.

Microsoft released MS-DOS 1.0 to IBM, the operating system that would launch the PC era and make Bill Gates's company a software giant.

Apple slashed the price of its Lisa computer, the first commercial machine with a graphical user interface and mouse, from $9,995 amid disappointing sales.

Apple's Lisa computer, the first commercial personal computer with a graphical user interface and mouse, went on sale.

Commodore unveiled the Amiga 1000 at a lavish Lincoln Center event, showcasing graphics and sound years ahead of rival personal computers.

Steve Jobs, forced out of Apple months earlier, founded NeXT Inc. to build advanced computers for higher education and business markets.

Microsoft shipped Windows 1.0, its first graphical operating environment for IBM-compatible PCs, launching a franchise that would dominate personal computing.

The Morris Worm, released the previous day, spreads across thousands of computers, forcing researchers to disconnect systems and prompting the first major CFAA prosecution.

NSFNET established one of the earliest high-speed transatlantic network connections linking American research networks to European counterparts, a foundational step toward the modern global internet.

Tim Berners-Lee's first web server and browser went live at CERN, quietly launching the World Wide Web to the public.

Cambridge computer scientists pointed a camera at a coffee pot and streamed the image over the university network, birthing the world's first webcam.

CERN's public web server, hosting Tim Berners-Lee's foundational World Wide Web software, became broadly accessible, letting outside researchers connect for the first time.

Linus Torvalds's fledgling Linux kernel, first announced weeks earlier, continued gaining traction among early Usenet enthusiasts trading patches and bug reports in October 1991.

Larry Page and Sergey Brin's search engine, soon renamed Google, was effectively founded as a company, revolutionizing how humanity finds information.

Apple introduced the iPhone 5, its first phone with a taller 4-inch screen and a new Lightning connector, at a San Francisco event.