Skip to main content

The Executive and Interpreter

  • Chapter
  • 1467 Accesses

Part of the Springer Praxis Books book series (SPACEE)

In the most elementary computers, executing a program is a relatively easy task. Without having to accommodate multiple programs with potentially conflicting requirements, the user only has to load the instructions into memery, set the starting address, and watch it run. Indeed, for early computers (and specialized controller chips today), this “load and go” methodology works acceptably well. For the first decade of the computer age, the modern concept of an operation system simply did not exist. Programmers were required to write software to operate tape drives, printers and other peripherals in addition to the logic required to solve the business or scientific problem at hand. Over time, primitive ‘executive’ programs were introduced to reduce the burden of managing hardware. Rather than directly commanding a device such as a card reader, a program would invoke a pre-written routine to operate the external hardware on its behalf. Delegating such ‘low level’ operations to standardized and (hopefully) reliable interfaces improved productivity tremendously by eliminating the tiresome chores of system management.

Keywords

  • Double Precision
  • High Level Language
  • Machine Instruction
  • Index Register
  • Operation Code

These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

This is a preview of subscription content, access via your institution.

Buying options

Chapter
USD   29.95
Price excludes VAT (USA)
  • DOI: 10.1007/978-1-4419-0877-3_3
  • Chapter length: 99 pages
  • Instant PDF download
  • Readable on all devices
  • Own it forever
  • Exclusive offer for individuals only
  • Tax calculation will be finalised during checkout
eBook
USD   39.99
Price excludes VAT (USA)
  • ISBN: 978-1-4419-0877-3
  • Instant PDF download
  • Readable on all devices
  • Own it forever
  • Exclusive offer for individuals only
  • Tax calculation will be finalised during checkout
Softcover Book
USD   49.99
Price excludes VAT (USA)

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Editor information

Editors and Affiliations

Rights and permissions

Reprints and Permissions

Copyright information

© 2010 Praxis Publishing Ltd., Chichester, UK

About this chapter

Cite this chapter

(2010). The Executive and Interpreter. In: O’Brien, F. (eds) The Apollo Guidance Computer. Springer Praxis Books. Praxis. https://doi.org/10.1007/978-1-4419-0877-3_3

Download citation