Charles Babbage - Analytical Engine

Analytical Engine

Soon after the attempt at making the difference engine crumbled, Babbage started designing a different, more complex machine called the Analytical Engine. The engine is not a single physical machine but a succession of designs that he tinkered with until his death in 1871. The main difference between the two engines is that the Analytical Engine could be programmed using punched cards. He realised that programs could be put on these cards so the designer had only to create the program initially and then put the cards in the machine and let it run. The analytical engine would have used loops of Jacquard's punched cards to control a mechanical calculator, which could formulate results based on the results of preceding computations. This machine was also intended to employ several features subsequently used in modern computers, including sequential control, branching and looping and would have been the first mechanical device to be Turing-complete.

Ada Lovelace, who corresponded with Babbage during his development of the Analytical Engine, is credited with developing an algorithm for the Analytical Engine to calculate a sequence of Bernoulli numbers. Although there is disagreement over how much of the ideas were Lovelace's own, she is often described as the first computer programmer.

In 2011, researchers in Britain embarked on a multimillion-pound project, "Plan 28", to construct Babbage's Analytical Engine. Since Babbage's plans were continually being refined and were never completed, they will engage the public in the project and crowd-source the analysis of what should be built. It would have the equivalent of 675 bytes of memory, and run at a clock speed of about 7 Hz. They hope to complete it by the 150th anniversary of Babbage's death, in 2021.

Read more about this topic:  Charles Babbage

Other articles related to "engine, analytical engine":

Difference Engine - History
... tables was time consuming and expensive and they hoped the difference engine would make the task more economical ... such exacting standards before, so the engine proved to be much more expensive than anticipated ... in 1842, they had given Babbage over ₤17,000, without receiving a working engine ...
History Of Robots - 1500 To 1800
... the idea of programmable machines became popular with Charles Babbage's Analytical Engine Babbage conceived his Analytical Engine as a replacement for his uncompleted ... Construction of the Analytical Engine was never completed work was begun in 1833 ...
History Of Computing - Early Computation
... The apex of this early era of formal computing can be seen in the difference engine and its successor the Analytical Engine, which was never completely constructed but was designed in detail, both by Charles ... The analytical engine combined concepts from his work and that of others to create a device that if constructed as designed would have possessed many properties of a modern electronic computer ... Ada Lovelace took this concept one step further, by creating a program for the analytical engine to calculate Bernoulli numbers, a complex calculation ...
Ada Lovelace - Biography - Charles Babbage
... on many occasions, including socially and in relation to Babbage's Difference Engine and Analytical Engine ... Italian mathematician Luigi Menabrea's memoir on Babbage's newest proposed machine, the Analytical Engine ... Explaining the Analytical Engine’s function was a difficult task, as even other scientists did not really grasp the concept and the British establishment ...
Analytical Engine - Comparison To Other Early Computers
... If the Analytical Engine had been built, it would have been digital, programmable and Turing-complete ... Ada Lovelace reported in her notes on the Analytical Engine "Mr ... Babbage believes he can, by his engine, form the product of two numbers, each containing twenty figures, in three minutes" ...

Famous quotes containing the words engine and/or analytical:

    Industrial man—a sentient reciprocating engine having a fluctuating output, coupled to an iron wheel revolving with uniform velocity. And then we wonder why this should be the golden age of revolution and mental derangement.
    Aldous Huxley (1894–1963)

    I have seen too much not to know that the impression of a woman may be more valuable than the conclusion of an analytical reasoner.
    Sir Arthur Conan Doyle (1859–1930)