Tech1

Difference engine

Apr 9, 1837

Charles Babbage, an English mechanical engineer and polymath, originated the concept of a programmable computer. Considered the "father of the computer"in 1833 he realized that a much more general design, an Analytical Engine, was possible.

analog computer

Oct 23, 1872

The first modern analog computer was a tide-predicting machine, invented by Sir William Thomson in 1872.

differential analyse

Apr 3, 1876

The differential analyser, a mechanical analog computer designed to solve differential equations by integration using wheel-and-disc mechanisms, was conceptualized in 1876 by James Thomson

Analytical Engine

Jul 9, 1888

Henry Babbage, completed a simplified version of the analytical engine's computing unit (the mill) in 1888. He gave a successful demonstration of its use in computing tables in 1906.

Colossus Mark 2 computer

Feb 3, 1934

The engineer Tommy Flowers, working at the Post Office Research Station in London in the 1930s, began to explore the possible use of electronics for the telephone exchange. Experimental equipment that he built in 1934 went into operation 5 years later, converting a portion of the telephone exchange network into an electronic data processing system, using thousands of vacuum tubes.This design was also all-electronic and used about 300 vacuum tubes, with capacitors fixed in a mechanically rotatin

universal Turing machine (UTM)

Nov 10, 1936

Turing machine that can simulate an arbitrary Turing machine on arbitrary input. Turing machine, which can be considered a model of a general purpose computer.

bombe

Mar 18, 1940

Turing had specified an electromechanical machine that could help break Enigma more effectively than the Polish bomba kryptologiczna, from which its name was derived. The bombe, with an enhancement suggested by mathematician Gordon Welchman, became one of the primary tools, and the major automated one, used to attack Enigma-enciphered messages.

Zuse's Z3

Jul 9, 1941

Zuse followed his earlier machine up with the Z3, the world's first working electromechanical programmable, fully automatic digital computer.[12][13] The Z3 was built with 2000 relays, implementing a 22 bit word length that operated at a clock frequency of about 5–10 Hz.

ENIAC[23] (Electronic Numerical Integrator and Computer)

Jul 15, 1943

The US-built ENIAC[23] (Electronic Numerical Integrator and Computer) was the first electronic programmable computer built in the US. Although the ENIAC was similar to the Colossus it was much faster and more flexible.Electronic Numerical Integrator And Computer was the first electronic general-purpose computer . solve "a large class of numerical problems .

Manchester Small-Scale Experimental Machine, nicknamed Baby,

Jun 21, 1948

The was the world's first stored-program computer. It was built at the Victoria University of Manchester by Frederic C. Williams, Tom Kilburn and Geoff Tootill

Ferranti Mark 1

Feb 8, 1951

Ferranti Mark 1, the world's first commercially available general-purpose computer.[28] Built by Ferranti, it was delivered to the University of Manchester in February 1951.

LEO I computer

Apr 30, 1951

The LEO I computer became operational in April 1951 [30] and ran the world's first regular routine office computer job.

Harwell CADET

Feb 28, 1955

Transistorised computer was designed and built a machine using the newly developed transistors instead of valves.Harwell CADET was built by the electronics division of the Atomic Energy Research Establishment at Harwell.

ICs

Sep 12, 1958

Jack Kilby at Texas Instruments and Robert Noyce at Fairchild Semiconductor. Kilby recorded his initial ideas concerning the integrated circuit in July 1958, successfully demonstrating the first working integrated example on 12 September 1958

Intel 4004

Jan 1, 1971

The microprocessor. While the subject of exactly which device was the first microprocessor is contentious, partly due to lack of agreement on the exact definition of the term "microprocessor", it is largely undisputed that the first single-chip microprocessor was the [Intel 4004](http:https://www.youtube.com/watch?v=eyWrMuvJVI8//), designed and realized by Ted Hoff, Federico Faggin, and Stanley Mazor at Intel.

SCAMP

Aug 8, 1973

IBM Special Computer APL Machine Portable (SCAMP), was demonstrated in 1973.

Osborne 1

Mar 1, 1981

Advancements in portable battery life, advancements in portable battery life, portable computers grew in popularity in the 1990s grew in popularity in the 1990s. The Osborne 1, released in 1981, used the Zilog Z80 and weighed 23.6 pounds (10.7 kg). It had no battery,

RiD Compass 1100,

Apr 1, 1982

The first laptops using the flip form factor appeared in the early 1980s. GRiD Compass 1100, released in 1982, was used at NASA and by the military among others.

(IBM ThinkPad 700

Jan 1, 1992

Several new input techniques were developed and included in laptops, including the touchpad, the pointing stick (IBM ThinkPad 700, 1992.

Android Smartphone

Jan 1, 2003

allowed manufacturers to integrate computing resources into cellular phones. These so-called smartphones run on a variety of operating systems and are rapidly becoming the dominant computing device. A smartphone (or smart phone) is a mobile phone with more advanced computing capability and connectivity than basic feature phones.

(IBM ThinkPad 700

Jul 9, 2014

Displays reached VGA resolution by 1988 , and colour screens started becoming a common upgrade in 1991 with increases in resolution and screen size occurring frequently until the introduction of 17"-screen laptops in 2003. Optical storage, read-only CD-ROM followed by writeable CD and later read-only or writeable DVD and Blu-ray, became common in laptops early in the 2000s.