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earliest known tool used for computing is the Sumerian abacus -
Archimedes uses the mechanical principle of balance to calculate mathematical problems -
The Antikythera mechanism is created as the earliest known geared computing device. It was designed to calculate astronomical positions. -
Charles Sanders Peirce does an experiment that is carried out by electrical switching circuits. -
The first recorded idea of using digital electronics for computing was the 1931 paper "The Use of Thyratrons for High Speed Automatic Counting of Physical Phenomena" by C. E. Wynn-Williams. -
Atanasoff–Berry computer (ABC) which began development in 1937 was an experimental model is binary, executed addition and subtraction in octal binary code and is the first binary digital electronic computing device. -
The first digital electronic computer was developed in the period April 1936 - June 1939, in the IBM Patent Department, Endicott, New York by Arthur Halsey Dickinson. -
The Z3 computer, built by German inventor Konrad Zuse in 1941, was the first programmable, fully automatic computing machine, but it was not electronic. -
During World War II, ballistics computing was done by women, who were hired as "computers." The term computer remained one that referred to mostly women -
The ENIAC (Electronic Numerical Integrator And Computer) was the first electronic general-purpose computer, announced to the public in 1946. -
The Manchester Baby was the first electronic stored-program computer. It was built at the Victoria University of Manchester by Frederic C. Williams, Tom Kilburn and Geoff Tootill, and ran its first program on 21 June 1948 -
William Shockley, John Bardeen and Walter Brattain at Bell Labs invented the first working transistor, the point-contact transistor, in 1947, followed by the bipolar junction transistor in 1948. -
The metal–oxide–silicon field-effect transistor (MOSFET), also known as the MOS transistor, was invented by Mohamed Atalla and Dawon Kahng at Bell Labs in 1959. -
The silicon-gate MOS integrated circuit was developed by Federico Faggin at Fairchild Semiconductor in 1968.This led to the development of the first single-chip microprocessor, the Intel 4004. -
Texas Instruments released the first fully 16-bit microprocessor, the TMS9900 processor, in June 1976 -
The Motorola 68000 microprocessor had a processing speed that was far superior to the other microprocessors being used at the time. -
The Lisa was one of the first personal computers with a graphical user interface (GUI) that was sold commercially. It ran on the Motorola 68000 CPU and used both dual floppy disk drives and a 5 MB hard drive for storage. -
Apple released its first Macintosh computer, still running on the Motorola 68000 microprocessor, but with only 128KB of RAM, one floppy drive, and no hard drive to lower the price. -
In 1998, David Bader developed the first Linux supercomputer using commodity parts. -
As of April 2023, the fastest supercomputer is Frontier.