On February 6, 1959, Jack Kilby at Texas Instruments filed the first patent for the integrated circuit, revolutionizing computing by enabling multiple transistors on a single chip and paving the way for modern data processing and microelectronics.

On February 5, 1954, Susan Kare was born. She pioneered pixel-based computer icons and typography at Apple, designing the original Macintosh GUI elements that shaped modern data visualization and user interfaces.

On February 4, 1948, Ken Thompson was born. He co-created Unix and the B programming language at Bell Labs, pioneering operating systems and tools foundational to modern data science, analytics, and software engineering.

On February 3, 1986, Time magazine reported on Vaporware—software promised but repeatedly delayed. Microsoft's Windows was the prime example, frustrating an industry eager for innovation.

On February 2, 1996, Gil Amelio replaced Michael Spindler as CEO of Apple, steering the company through a pivotal transition amid its challenges in the mid-90s computing era.[1][6]

On February 1, 1991, Sun Microsystems began work on Java technology, the revolutionary programming language that powers data analytics, big data tools, and countless CS applications today.

On January 31, 1957, the Soviet Union launched Sputnik, the world's first artificial satellite, kicking off the space race and advancing computer tech for orbital calculations and data telemetry.

On January 30, 1925, Douglas Engelbart was born. He would go on to pioneer human-computer interaction and invent the computer mouse, fundamentally changing how we interact with technology.

On January 29, 1928, Joseph Kruskal was born. He developed Kruskal's algorithm, a cornerstone of data science for computing the minimal spanning tree of weighted graphs, vital in network analysis and optimization.

On January 28, 1952, Bank of America and SRI signed a contract to develop ERMA's pilot model—the first computerized system for banking transactions, pioneering magnetic ink character recognition for check processing.[1]

On January 27, 1994, Jim Clark left Silicon Graphics to found Mosaic Communications Corporation, which evolved into Netscape and revolutionized web browsing with the first widely used graphical browser.[1]

On January 26, 1931, Eiichi Goto was born. This Japanese computer scientist built one of the first general-purpose parametric computers, advancing early computing hardware with innovative memory tech.

On January 25, 1947, Thomas Goldsmith Jr. filed a patent for the Cathode Ray Tube Amusement Device, the world's first electronic game and an early milestone in computer graphics and interactive computing.[4]

On January 24, 1984, Apple released the Macintosh, the first commercially successful personal computer with a graphical user interface and mouse.

On January 23, 1996, Java was released, introducing the revolutionary write once, run anywhere capability that transformed internet programming and became fundamental to modern software development.

On January 22, 1984, Apple Computer launched the Macintosh, introducing the graphical user interface and mouse to the mainstream market, fundamentally transforming how people interacted with computers and revolutionizing personal computing design.

On January 21, 1888, Charles Babbage's Analytical Engine passed its first test when it produced a table of the first 44 multiples of π to twenty-nine decimal places, marking a milestone in mechanical computing history.

On January 20, 1988, small computer companies announced success in cloning IBM's PS/2 technology with compatible microprocessors and software, challenging IBM's personal computer dominance.

On January 19, 1983, Apple released the Lisa, the first commercial personal computer with a graphical user interface and mouse, paving the way for modern computing. Priced at $9,995, its innovations shaped the Macintosh.[1][2][3][4]

On January 18, 1938, J.W. Bryce outlined the Harvard Mark I—the first fully automatic computer—in a memo to IBM scientists. Completed in 1944, it performed three additions or subtractions per second.

On January 17, 1949, computer scientist Anita Borg was born. She championed women in tech, founded the Institute for Women and Technology, and created the Grace Hopper Celebration of Women in Computing.

On January 16, 1944, J.W. Bryce wrote a memorandum formalizing IBM's development of the Harvard Mark I, the first fully automatic computing machine. Completed that year, it performed three additions or subtractions per second and stored 72 numbers in memory.

On January 15, 1986, the National Science Foundation opened the National Center for Supercomputer Applications (NCSA) at the University of Illinois. This hub advanced computational science and later birthed the Mosaic web browser, revolutionizing the internet.

On January 14, 1919, Nathaniel Rochester was born. He designed the IBM 701, wrote the first assembler, and pioneered artificial intelligence research.

On January 13, 1874, the US Patent Office issued a patent for the Spalding Adding Machine, a mechanical precursor to calculators and computers that performed simple arithmetic for businesses.

On January 12, 1997, the fictional AI HAL 9000 from Arthur C Clarke and Stanley Kubricks 2001 A Space Odyssey is described as becoming operational at the HAL plant in Urbana, Illinois, a milestone vision for human computer interaction and artificial intelligence.

On January 11, 1960, the ACM/GAMM committee convened to develop Algol 60, the first block-structured programming language, laying key foundations for modern computer science and influencing later languages such as Pascal and C.

On January 10, 1938, Donald Knuth was born in Milwaukee. His work on algorithm analysis, The Art of Computer Programming, and the TeX typesetting system reshaped modern computer science and technical publishing.

On January 9, 2007, Steve Jobs introduced the first iPhone, merging phone, internet, and iPod into a single device and transforming mobile computing, app ecosystems, and how data is collected, processed, and visualized worldwide.

On January 8, 1889, Herman Hollerith received a patent for his electromechanical tabulating machine, a breakthrough in automated data processing that powered the 1890 US census and paved the way for modern data engineering and analytics.

On January 7, 1963, Ivan Sutherland introduced Sketchpad in his MIT PhD thesis. This pioneering program on the TX-0 enabled direct manipulation of graphical objects with a light pen, laying the foundation for modern GUIs and computer graphics.

On January 6, 2010, computer scientist Fabrice Bellard announced computing pi to a record 2.7 trillion digits, showcasing breakthroughs in high-precision arithmetic and computational power.

On January 5, 1962, Hewlett-Packard introduced the HP-35, the world's first scientific handheld calculator, revolutionizing computation and data analysis for engineers and scientists.

On January 4, 1972, Hewlett-Packard introduced the HP-35, the world's first scientific handheld calculator, revolutionizing computation with its Reverse Polish Notation and key functions like trig and logs. A milestone in portable computing!

On January 3, 1977, Steve Jobs and Steve Wozniak incorporated Apple Computer, Inc., launching what would become one of the most influential technology companies in computing history.

On January 2, 1975, Bill Gates and Paul Allen officially named their new company Micro-Soft, marking the birth of what became Microsoft.

On January 1, 1971, the IEEE Computer Group became the IEEE Computer Society, a key organization advancing computer science and engineering worldwide.[2]

On December 31, 1976, CROMEMCO, a pioneering microcomputer company known for innovative systems like the Z-1 and Dazzler graphics card, was incorporated.

On December 30, 2004, Facebook registered its one millionth user, marking a pivotal moment in social media history and the beginning of a platform that would fundamentally transform how people connect and share data globally.

On December 29, 1939, William Shockley made a historic notebook entry at Bell Labs, documenting the theoretical foundation for the junction transistor that revolutionized computing and electronics.[1]

On December 28, 1903, John von Neumann was born in Budapest. His work on stored-program design and the IAS machine defined the von Neumann architecture that still underpins most modern computers and data processing systems today.

On December 27, 1822, computer scientist and mathematician Louis Poinsot was born. His work on quaternions advanced vector analysis, foundational for 3D graphics, data visualization, and computer graphics algorithms.

On December 26, 1791, Charles Babbage was born in London. The English mathematician and inventor conceived the Difference Engine and Analytical Engine, forerunners of the modern programmable computer.[1][3][5]

On December 25, 1990, Tim Berners-Lee at CERN released the first version of the World Wide Web, including the world's first web browser and editor. This breakthrough enabled hypertext sharing over the internet, revolutionizing data access and visualization.

On December 24, 2002, a US federal judge ordered Microsoft to include Sun Microsystems Java in Windows and stop shipping its incompatible Java implementation, a pivotal antitrust ruling that helped preserve cross platform software development.

On December 23, 1947, John Bardeen and Walter Brattain demonstrated the first transistor to Bell Labs supervisors, revolutionizing computing with a tiny semiconductor amplifier that enabled modern data processing and storage.[1][7]

On December 22, 1955, the FINAC, the Italian Mark I*, was inaugurated—a pioneering electronic computing machine that advanced early computer technology in Europe during the post-war era.

On December 21, 1968, the Apollo Guidance Computer flew to the Moon on Apollo 8, pioneering real-time data processing, navigation algorithms, and integrated circuitry for spaceflight.

On December 20, 1990, Tim Berners-Lee uploaded the first website to CERN's servers, explaining the World Wide Web project with basic text and hyperlinks. This modest page laid the foundation for the modern internet.

On December 19, 1921, Kenneth E. Iverson was born, the computer scientist who created the APL programming language and helped shape modern array programming and data analysis paradigms.