Download e-book for iPad: A Science of Operations: Machines, Logic and the Invention by Mark Priestley

By Mark Priestley

ISBN-10: 1848825544

ISBN-13: 9781848825543

Today, desktops fulfil a stunning array of roles, a flexibility due to the nice diversity of programsthat should be run on them.

A technology of Operations examines the historical past of what we now name programming, outlined now not easily as computer programming, yet extra extensively because the definition of the stairs considering computations and different information-processing actions. This targeted viewpoint highlights how the historical past of programming is precise from the historical past of the pc, regardless of the shut courting among the 2 within the 20th century. The booklet additionally discusses how the advance of programming languages is expounded to disparate fields which tried to offer a mechanical account of language at the one hand, and a linguistic account of machines at the other.

Topics and features:

  • Covers the early improvement of computerized computing, together with Babbage’s “mechanical calculating engines” and the functions of punched-card technology
  • Examines the theoretical paintings of mathematical logicians equivalent to Kleene, Church, put up and Turing, and the machines equipped by way of Zuse and Aiken within the Nineteen Thirties and 1940s
  • Discusses the position that good judgment performed within the improvement of the saved application computer
  • Describes the “standard version” of machine-code programming popularised through Maurice Wilkes
  • Presents the entire desk for the common Turing computing device within the Appendices
  • Investigates the increase of the projects aimed toward constructing higher-level programming notations, and the way those got here to be regarded as ‘languages’ that may be studied independently of a machine
  • Examines the significance of the Algol 60 language, and the framework it supplied for learning the layout of programming languages and the method of software program development
  • Explores the early improvement of object-oriented languages, with a spotlight at the Smalltalk project

This interesting textual content bargains a brand new point of view for historians of technology and know-how, in addition to for the overall reader. The ancient narrative builds the tale in a transparent and logical style, approximately following chronological order.

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Extra info for A Science of Operations: Machines, Logic and the Invention of Programming

Sample text

Different forms of arrow showed alternative types of connection, indicating whether motion was communicated by attaching one part to another, by friction, by a ratchet-driven mechanism, or a variety of other means. Most importantly, the notation showed the “succession of the movements which take place in the working of the machine”. Babbage assumed that a machine’s action was periodic, and that after a certain period of time it would return to its initial state and the sequence of movements would be repeated.

When a combinatorial card was encountered, the number on these wheels would be reduced by one and the operation cards backed up as far as required. When the number on the wheels reached zero, the combinatorial card would be ignored and the computation would proceed with the next operation card. 49 The sole purpose of this suggestion seems to have been to minimize the number of operation cards that needed to be prepared for a calculation. A further type of cards were the number cards; these were perforated in such a way as to make it possible to transfer a number from the card to a figure axis.

In the formula P − Q, for example, the algebraic signs of P and Q are + and −, respectively; however, their accidental signs could be + or −, depending on whether the corresponding numbers in the store were positive or negative. Depending on the combination of these signs, the actual operation to be performed might differ from that specified on an operation card: in the formula above, if the accidental sign of Q was negative, for example, its absolute value would be added to that of P rather than subtracted from it.

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A Science of Operations: Machines, Logic and the Invention of Programming by Mark Priestley


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