Browse Definitions :
Definition

Ada Lovelace (Augusta Ada King)

Augusta Ada King, Countess of Lovelace, was an English mathematician who is credited with being the first computer programmer. She is known for writing the first algorithm for a machine, inventing the subroutine and recognizing the importance of looping. Countess Lovelace lived from 1815 to 1852. 

Ada, whose given name was Augusta Ada Byron, was the daughter of the poet Lord Byron and Annabella Milbanke Byron, an accomplished mathematician. Ada was educated in music and mathematics by a succession of tutors, including Mary Somerville, a noted mathematician and scientist during the Victorian era. In addition to publishing her own papers, Somerville was known for translating Mécanique Céleste by Pierre-Simon Laplace and adding her own notes to explain the mathematics used by the author.

In 1833, Somerville introduced Ada Byron to Charles Babbage, who demonstrated a working model of a steam-powered calculating machine he called a Difference Engine. According to contemporary reports, Ada was very interested in the Difference Engine, which was designed to calculate and print out tables, but was particularly fascinated by Babbage’s plans for an Analytic Engine, a more complicated machine inspired in part by the mechanisms of the Jacquard loom. Babbage was impressed not only with Ada's mathematical knowledge and understanding of how both machines would work, but also with her ability to articulate her thinking.

Ada married William King-Noel, 1st Earl of Lovelace, and kept in touch with Charles Babbage. After the birth of her third child, she turned her attention back to mathematics. By this time, Babbage had received funding from the British government to build a full-size model of his Difference Engine. The British Navy was interesting in using Babbage's machine to ensure the accuracy of their navigation tables, but construction of the room-sized machine proved mechanically difficult and after ten years, funding was withdrawn. The Difference Engine was never completed, and Babbage turned his attention once more to his plans for an Analytic Engine.

To raise interest in funding the Analytic Engine, Babbage allowed Luigi Federico Menabrea to write a paper about the Analytic Engine. The paper was published in French and Ada Lovelace volunteered to translate it from French to English. Just as Mary Somerville added her own notes to the translation of Mécanique Céleste, Ada Lovelace added her own notes to the translation of Menabrea’s paper. By the time Ada finished, her notes were three times longer than the original paper.

Ada understood how the punch cards a Jacquard loom used to create patterns could be used represent abstract ideas. This understanding allowed her to imagine how the Analytic Engine could be used in ways that Babbage hadn’t thought of yet. For example, in her annotations, Ada described a method by which the Analytical Engine could be made to compute Bernoulli numbers. Her algorithm for computing Bernoulli numbers is considered to be the first computer program. Ada Lovelace’s translation of Menabrea's paper, which included her notes, was published in 1843 under the name AAL.

Ada, the programming language created by the United States Department of Defense, is named in honor of the Countess of Lovelace. Since 2009, her contributions to science and engineering have been recognized each year on the middle Tuesday of October.

This was last updated in February 2017

Continue Reading About Ada Lovelace (Augusta Ada King)

Join the conversation

1 comment

Send me notifications when other members comment.

Please create a username to comment.

There was a serious flaw in the question - Alicia Stott wasn't English - she was Irish
Cancel

-ADS BY GOOGLE

File Extensions and File Formats

Powered by:

SearchCompliance

  • compliance audit

    A compliance audit is a comprehensive review of an organization's adherence to regulatory guidelines.

  • regulatory compliance

    Regulatory compliance is an organization's adherence to laws, regulations, guidelines and specifications relevant to its business...

  • Whistleblower Protection Act

    The Whistleblower Protection Act of 1989 is a law that protects federal government employees in the United States from ...

SearchSecurity

  • Cybercrime

    Cybercrime is any criminal activity that involves a computer, networked device or a network.

  • data breach

    A data breach is a confirmed incident in which sensitive, confidential or otherwise protected data has been accessed and/or ...

  • zero-day (computer)

    A zero-day vulnerability, also known as a computer zero day, is a flaw in software, hardware or firmware that is unknown to the ...

SearchHealthIT

SearchDisasterRecovery

  • cloud insurance

    Cloud insurance is any type of financial or data protection obtained by a cloud service provider. 

  • business continuity software

    Business continuity software is an application or suite designed to make business continuity planning/business continuity ...

  • business continuity policy

    Business continuity policy is the set of standards and guidelines an organization enforces to ensure resilience and proper risk ...

SearchStorage

  • business impact analysis (BIA)

    Business impact analysis (BIA) is a systematic process to determine and evaluate the potential effects of an interruption to ...

  • RAID (redundant array of independent disks)

    RAID (redundant array of independent disks) is a way of storing the same data in different places on multiple hard disks to ...

  • dedicated cloud

    A dedicated cloud is a single-tenant cloud infrastructure, which essentially acts as an isolated, single-tenant public cloud.

Close