Final answer:
Lady Ada Lovelace is best known as the first computer programmer and a visionary in early computing, a century before computers as we know them came into existence.
Step-by-step explanation:
Lady Ada Lovelace is best known as the first computer programmer. She worked on Charles Babbage's early mechanical general-purpose computer, the Analytical Engine. Her notes on the engine included what is recognized as the first algorithm intended to be carried out by a machine. Because of this, she is often celebrated for her visionary approach to computing a century before they were realized. Ada Lovelace's contributions to the field of computing mark her as one of the most important figures in the history of technology and illustrate the enduring impact of women in STEM fields.