Skip to main content

minimum-access code

minimum-access code A form of programming for early computers with magnetic-drum storage. It was also known as optimum programming. In programs for this kind of machine, each instruction specified the address of its successor, and it was desirable to place instructions in addresses so chosen that they were available under the reading heads when required. Since the execution time of instruction varied, it was necessary to work out how far the drum would rotate during execution of an instruction: this then determined the optimum position of its successor. Since this address might already be occupied, obtaining an optimal (or nearly optimal) distribution of instructions on the drum was extremely difficult.

The most widely used machine of this kind was the IBM 650; the success of the machine was largely due to the SOAP assembler, which produced near-optimal code positioning without any special effort on the part of the programmer.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"minimum-access code." A Dictionary of Computing. . Encyclopedia.com. 13 Dec. 2018 <https://www.encyclopedia.com>.

"minimum-access code." A Dictionary of Computing. . Encyclopedia.com. (December 13, 2018). https://www.encyclopedia.com/computing/dictionaries-thesauruses-pictures-and-press-releases/minimum-access-code

"minimum-access code." A Dictionary of Computing. . Retrieved December 13, 2018 from Encyclopedia.com: https://www.encyclopedia.com/computing/dictionaries-thesauruses-pictures-and-press-releases/minimum-access-code

Learn more about citation styles

Citation styles

Encyclopedia.com gives you the ability to cite reference entries and articles according to common styles from the Modern Language Association (MLA), The Chicago Manual of Style, and the American Psychological Association (APA).

Within the “Cite this article” tool, pick a style to see how all available information looks when formatted according to that style. Then, copy and paste the text into your bibliography or works cited list.

Because each style has its own formatting nuances that evolve over time and not all information is available for every reference entry or article, Encyclopedia.com cannot guarantee each citation it generates. Therefore, it’s best to use Encyclopedia.com citations as a starting point before checking the style against your school or publication’s requirements and the most-recent information available at these sites:

Modern Language Association

http://www.mla.org/style

The Chicago Manual of Style

http://www.chicagomanualofstyle.org/tools_citationguide.html

American Psychological Association

http://apastyle.apa.org/

Notes:
  • Most online reference entries and articles do not have page numbers. Therefore, that information is unavailable for most Encyclopedia.com content. However, the date of retrieval is often important. Refer to each style’s convention regarding the best way to format page numbers and retrieval dates.
  • In addition to the MLA, Chicago, and APA styles, your school, university, publication, or institution may have its own requirements for citations. Therefore, be sure to refer to those guidelines when editing your bibliography or works cited list.