**Google’s latest doodle celebrates the 197th birthday of Ada Lovelace, the 19th century mathematician and daughter of romantic poet Lord Byron.**

The doodle shows Ada Lovelace writing the pioneering computer program with a quill pen seated on a desk and the paper scroll she is writing her algorithm on twirls in the shape of the letters of the Google logo.

**Augusta Ada King, Countess of Lovelace** (10 December 1815 – 27 November 1852), born **Augusta Ada Byron** and now commonly known as **Ada Lovelace**, was an English mathematician and writer chiefly known for her work on Charles Babbage’s early mechanical general-purpose computer, the Analytical Engine.

Her notes on the engine include what is recognised as the first algorithm intended to be processed by a machine. Because of this, she is often considered the world’s first computer programmer.

Ada Lovelace is daughter of romantic poet Lord Byronhad. She had no relationship with her father, who died when she was eight. In 1835, she married William King, who was created Earl of Lovelace in 1838. She died in 1852 at the age of 36.

## Ada Lovelace – Biography Video

## Famous Quotes of Ada Lovelace

“The purpose which that engine has been specially intended and adapted to fulfil, is the computation of nautical and astronomical tables.”

Lovelace, Ada. *Notes upon L. F. Menabrea’s “Sketch of The Analytical Engine Invented by Charles Babbage”.* 1842.

In this, which we may call the neutral or zero state of the engine, it is ready to receive at any moment, by means of cards constituting a portion of its mechanism (and applied on the principle of those used in the Jacquard-loom), the impress of whatever special function we may desire to develope or to tabulate.

Lovelace, Ada. *Notes upon L. F. Menabrea’s “Sketch of The Analytical Engine Invented by Charles Babbage”.* 1842.

In studying the action of the Analytical Engine, we find that the peculiar and independent nature of the considerations which in all mathematical analysis belong to operations, as distinguished from the objects operated upon and from the results of the operations performed upon those objects, is very strikingly defined and separated.

Lovelace, Ada. *Notes upon L. F. Menabrea’s “Sketch of The Analytical Engine Invented by Charles Babbage”.* 1842.

It may be desirable to explain, that by the word operation, we mean any process which alters the mutual relation of two or more things, be this relation of what kind it may. This is the most general definition, and would include all subjects in the universe.

Lovelace, Ada. *Notes upon L. F. Menabrea’s “Sketch of The Analytical Engine Invented by Charles Babbage”.* 1842.

In abstract mathematics, of course operations alter those particular relations which are involved in the considerations of number and space, and the results of operations are those peculiar results which correspond to the nature of the subjects of operation.

Lovelace, Ada. *Notes upon L. F. Menabrea’s “Sketch of The Analytical Engine Invented by Charles Babbage”.* 1842.

But the science of operations, as derived from mathematics more especially, is a science of itself, and has its own abstract truth and value; just as logic has its own peculiar truth and value, independently of the subjects to which we may apply its reasonings and processes.

Lovelace, Ada. *Notes upon L. F. Menabrea’s “Sketch of The Analytical Engine Invented by Charles Babbage”.* 1842.

The Analytical Engine is an embodying of the science of operations, constructed with peculiar reference to abstract number as the subject of those operations.

Lovelace, Ada. *Notes upon L. F. Menabrea’s “Sketch of The Analytical Engine Invented by Charles Babbage”.* 1842.

We cannot forbear suggesting one practical result which it appears to us must be greatly facilitated by the independent manner in which the engine orders and combines its operations: we allude to the attainment of those combinations into which imaginary quantities enter.

Lovelace, Ada. *Notes upon L. F. Menabrea’s “Sketch of The Analytical Engine Invented by Charles Babbage”.* 1842.

The Analytical Engine, on the contrary, can either add, subtract, multiply or divide with equal facility; and performs each of these four operations in a direct manner, without the aid of any of the other three.

Lovelace, Ada. *Notes upon L. F. Menabrea’s “Sketch of The Analytical Engine Invented by Charles Babbage”.* 1842.

This one fact implies everything; and it is scarcely necessary to point out, for instance, that while the Difference Engine can merely tabulate, and is incapable of developing, the Analytical Engine can either tabulate or develope.

Lovelace, Ada. *Notes upon L. F. Menabrea’s “Sketch of The Analytical Engine Invented by Charles Babbage”.* 1842.

We may say most aptly, that the Analytical Engine weaves algebraical patterns just as the Jacquard-loom weaves flowers and leaves.

Lovelace, Ada. *Notes upon L. F. Menabrea’s “Sketch of The Analytical Engine Invented by Charles Babbage”.* 1842.

In enabling mechanism to combine together general symbols in successions of unlimited variety and extent, a uniting link is established between the operations of matter and the abstract mental processes of the most abstract branch of mathematical science.

Lovelace, Ada. *Notes upon L. F. Menabrea’s “Sketch of The Analytical Engine Invented by Charles Babbage”.* 1842.

A new, a vast, and a powerful language is developed for the future use of analysis, in which to wield its truths so that these may become of more speedy and accurate practical application for the purposes of mankind than the means hitherto in our possession have rendered possible.

Lovelace, Ada. *Notes upon L. F. Menabrea’s “Sketch of The Analytical Engine Invented by Charles Babbage”.* 1842.

Thus not only the mental and the material, but the theoretical and the practical in the mathematical world, are brought into more intimate and effective connexion with each other.

Lovelace, Ada. *Notes upon L. F. Menabrea’s “Sketch of The Analytical Engine Invented by Charles Babbage”.* 1842.

One essential object is to choose that arrangement which shall tend to reduce to a minimum the time necessary for completing the calculation.

Lovelace, Ada. *Notes upon L. F. Menabrea’s “Sketch of The Analytical Engine Invented by Charles Babbage”.* 1842.

It must be evident how multifarious and how mutually complicated are the considerations which the working of such an engine involve. There are frequently several distinct sets of effects going on simultaneously; all in a manner independent of each other, and yet to a greater or less degree exercising a mutual influence.

Lovelace, Ada. *Notes upon L. F. Menabrea’s “Sketch of The Analytical Engine Invented by Charles Babbage”.* 1842.

The object of the engine is in fact to give the utmost practical efficiency to the resources of numerical interpretations of the higher science of analysis, while it uses the processes and combinations of this latter.

Lovelace, Ada. *Notes upon L. F. Menabrea’s “Sketch of The Analytical Engine Invented by Charles Babbage”.* 1842.

It is however pretty evident, on general principles, that in devising for mathematical truths a new form in which to record and throw themselves out for actual use, views are likely to be induced, which should again react on the more theoretical phase of the subject.

Lovelace, Ada. *Notes upon L. F. Menabrea’s “Sketch of The Analytical Engine Invented by Charles Babbage”.* 1842.