Year	Invention	Inventor (s)	Notes
16^th Century	Abacus	China	First Mechanical calculator
-	Antikythera mechanism		First known analog computer
1617	Napier’s Bones	John Napier	It is used for calculation of products and quotients of numbers and the technique was also called Rabdology
1620-30	Slide Rule: Slipstick in United States	Circular Slide Rule: Edmund Gunter Modern Slide Rule: William Oughtred	It is a mechanical analog computer
1642	Arithmetic Machine/ Pascal’s Calculator/ Pascaline	Blaise Pascal	It was a complicated set of gears that operated similarly to clock. It was designed to only perform addition.
1672-1694	Stepped Reckoner	Gottfried Whilhelm Leibniz	First calculator that could perform all four arithmetic operations addition, subtraction, multiplication and division
1801	Jacquard loom	Joseph Marie Jacquard	It used card of holes for weaving pattern. First mechanical loom Introduced Punch cards.
1823	Difference engine	Charles Babbage	It is an automatic mechanical calculator designed to tabulate polynomial functions.
1837	Analytical Engine	Charles Babbage	First mechanical general-purpose computer
1890	Tabulating Machine	Herman Hollerith	It was developed to help process data for the 1890 U.S. Census
1935	Z1	Konrad Zuse	First freely programmable computer
1944	MARK – 1	Howard Alken and Grace Hopper	First electro-mechanical computer
1939	ABC: Atanasoff Berry Computer	John Atanasoff & Clifford Berry	First automatic electronic digital computer. It used the Binary Number system of 1s and 0s
1946	ENIAC: Electronic Numerical Integartor and Computer	John Presper Eckert & John W Mauchly	First electronic general-purpose computer
1949	EDSAC: Electronic Delay Storage Automatic Calulator	John von Neumann	First computer to store program
1949	EDVAC: Electronic Discrete Variable Automatic Computer	John Presper Eckert & John W Mauchly	It was a binary serial computer with automatic addition, subtraction multplication, programmed division and automatic checking with an ultrasonic serial memory.
1951	UNIVAC: Universal Automatic Computer	John Presper Eckert & John W. Mauchy	First general-purpose computer for commercial use
1947	Transistors	John Bardeen, Walter Brattain, and William Shockley	It is a semiconductor device that could replace a vacuum tube. First used in IBM 650
1961	ICs: Integrated Circuits	Jack Kilby and Robert Noyce	It can replaced a hundred of transistors First used in 1BM 360.
1970	Microprocessors	Marcian Hoff, Masatoshi Shima and Stanley Mazor	The Intel 4004 (four-thousand-four) is a 4-bit central processing unit (CPU) released by Intel Corporation in 1971. It was the first microprocessor
1964	Computer Mouse & graphical user interface (GUI)	Douglas Engelbart	This marks the evolution of the computer from a specialized machine for scientsts and mathematicians to technology that is more accessible to the general public
1970	Intel 1103: DRAM chip	Intel company	First Dynamic Access Memory (DRAM) chip
1971	Floppy Disk	Alan Shugart & IBM team	Nicknamed the Floppy for its flexibility
1973	Ethernet	Robert Metcalfe & Xerox	Its connects multiple computers and other hardware
1974-1975	Personal Computer: Scelbi, Mark-8, Altair, IBM 5100	Scelbi Computer Consulting Company, Jonathan Titus, Micro Instrumentation and Telemetry Systems (MITS), IBM (respectively)	The first consumer computers The IBM 5100 becomes the first commercially available portable computer
1976-1977	Apple I,II	Steve Jobs and Steve Wozniak	Apple I, the first computer with a single-circuit board Apple Il offers color graphics and incorporates an audio cassette drive for storage
1981	MS-DOS Computer Operating System	Bill Gates and Paul Allen	It introduces a whole new language to the general public. Typing and various cryptic commands gradually becomes part of daily work. People discover the backslash () key
1981	Acorn	IBM	First IBM personal computer
1983-1984	Lisa, Apple Macintosh	Apple Inc.	First personal computer with a Graphical User Interface (GUI)
1985	Microsoft Windows	Microsoft Corporation	Microsoft ships Windows 1.0. Now, rather than typing MS-DOS commands, you just move a mouse to point and click your way through screens, or 'windows. Bill Gates says, "lt is unique software designed for the serious PC user."
1990	Hyper Text Markup Language(HTML) and World Wide Web(WWW)	Tim Berners-Lee and Robert Cailliau	WWWW is an information system of interlinked hypertext documents that are accessed via the Internet. It has also commonly become known simply as the Web
2003	AMD’s Athion 64	Advanced Micro Devices, Inc.	First 64-bit processor
2004	Mozilla’s Firefox 1.0	Mozilla Foundation and contributors Mozilla Corporation	It challenges Microsoft's Internet Explorer, the dominant web browsers
2006	MacBook Pro	Apple Inc.	First Intel-based, dual-core mobile computer
2007	iPhone	Apple Inc.	Original Smartphone era begins from here.
2008	Android	Andy Rubin, Rich Miner, Nick Sears and Google	T-Mobile G1 Is the First-ever Android device, had quirky design elements like the swing-out keyboard and the "chin
2010	iPad	Apple Inc.	Apple releases the original iPad
2011	3D transistors	Intel Corporation	Intel announces the commercialisation of 3D transistors
2012	Ultrabook	Intel Corporation	It is a specification and trademarked brand by Intel for a class of high- end subnotebooks which are designed to feature reduced bulk without compromising battery life
2014	Intel®Core^TM i7-5960X	Intel Corporation	Intel unveiled its first eight-core desktop processor.
2015	Ubuntu operating system	Canonical Ltd. Ubuntu community contributors, The carrier Advisory Group	The BQ Aquaris E4.5 Ubuntu Edition becomes the first phone running the Ubuntu operating system to be released February 11, 2015