Alan Turing: Computer

Alan Turing was British mathematician, logician, cryptanalyst, and computer scientist. Explore interesting quotes on computer.
Alan Turing: 66   quotes 51   likes

“Instruction tables will have to be made up by mathematicians with computing experience and perhaps a certain puzzle-solving ability. There need be no real danger of it ever becoming a drudge, for any processes that are quite mechanical may be turned over to the machine itself.”

Alan Turing

"Proposed Electronic Calculator" (1946), a report for National Physical Laboratory, Teddington; published in A. M. Turing's ACE Report of 1946 and Other Papers (1986), edited by B. E. Carpenter and R. W. Doran, and in The Collected Works of A. M. Turing (1992), edited by D. C. Ince, Vol. 3.

“We are not asking whether all digital computers would do well in the game nor whether the computers at present available would do well, but whether there are imaginable computers which would do well.”

Alan Turing Computing Machinery and Intelligence

Computing Machinery and Intelligence (1950)

Imagination , Game

“A digital computer can usually be regarded as consisting of three parts: (i) Store. (ii) Executive unit. (iii) Control…. The executive unit is the part which carries out the various individual operations involved in a calculation…. It is the duty of the control to see that… [the table of] instructions are obeyed correctly and in the right order…. A typical instruction might say—"Add the number stored in position 6809 to that in 4302 and put the result back into the latter storage position." Needless to say it would not occur in the machine expressed in English. It would more likely be coded in a form such as 6809430217. Here 17 says which of various possible operations [add] is to be performed on the two numbers…. It will be noticed that the instruction takes up 10 digits and so forms one packet of information…”

Alan Turing Computing Machinery and Intelligence

Computing Machinery and Intelligence (1950)

Parting

“If one wants to make a machine mimic the behaviour of the human computer in some complex operation one has to ask him how it is done, and then translate the answer into the form of an instruction table. Constructing instruction tables is usually described as "programming."”

Alan Turing Computing Machinery and Intelligence

Computing Machinery and Intelligence (1950)

“The idea behind digital computers may be explained by saying that these machines are intended to carry out any operations which could be done by a human computer.”

Alan Turing Computing Machinery and Intelligence

Source: Computing Machinery and Intelligence (1950), p. 436.

Idea

“To each computable sequence there corresponds at least one description number, while to no description number does there correspond more than one computable sequence. The computable sequences and numbers are therefore enumerable.”

Alan Turing Computable Numbers

On Computable Numbers, with an Application to the Entscheidungsproblem (1936)

“If an ɑ-machine prints two kinds of symbols, of which the first kind (called figures) consists entirely of 0 and 1 (the others being called symbols of the second kind), then the machine will be called a computing machine.”

Alan Turing Computable Numbers

On Computable Numbers, with an Application to the Entscheidungsproblem (1936)

“We may compare a man in the process of computing a real number to a machine which is only capable of a finite number of conditions q1, q2, ..., qK which will be called " m-configurations ."”

Alan Turing Computable Numbers

On Computable Numbers, with an Application to the Entscheidungsproblem (1936)