But women are often overlooked, and we want to celebrate their contributions.

These are all faces of what women in tech can accomplish.

Ginni Rometty

By Asa Mathat / Fortune Live Media

Ginni Rometty(b.

Over the shoulder view of a female engineer working on spacecraft construction.

gordenkoff / Getty Images

  1. was a systems engineer before she became IBM’s first woman CEO in 2012.

This move opened the door for other tech companies to allow women into senior management positions.

Her career with IBM began in technical positions, which led to management and sales positions.

Ginni Rometty of IBM in 2011 during “One on One: Ginni Rometty” at the Fortune Most Powerful Women Summit in Laguna Niguel, CA.

Ginni Rometty.By Asa Mathat / Fortune Live Media

You have to stick up for what you believe in.

When Rometty became CEO, she embraced big data and analytics to advance IBM.

Radia Perlman

By Scientist-100 at English Wikipedia / Wikipedia

Radia Perlman(b. Perlman attended MIT where she earned a B.S.

Radia Perlman

Radia Perlman.By Scientist-100 at English Wikipedia / Wikipedia

in Mathematics and a Ph.D. in Computer Science.

I always thought it was a bad idea to forward Ethernet packets.

Radia Perlman has been called The Mother of the Internet with good reason.

Katherine Johnson

Katherine Johnson.NASA / NASA

She earned a B.S.

in Mathematics and French.

The report laid out equations describing an orbital spaceflight in which the landing position of the spacecraft is specified.

Sister Mary Kenneth Keller

Sister Mary Kenneth Keller.Sisters of Charity, BVM / Sisters of Charity of the Blessed Virgin Mary

Johnson was the first woman to receive credit for authoring a research report at the Flight Research Division.

Like what you do, and then you will do your best.

However, the team wasnt particularly confident in the machines at that time.

Rear Admiral Grace Murray Hopper

Rear Admiral Grace Murray Hopper.James S. Davis / Wikipedia

It was then that Glenn called in Johnson to execute the same equations manually at her desk.

She also authored and coauthored 26 research reports.

Keller started her technology journey in Chicago, Illinois.

Ada Lovelace

Ada Lovelace.Science Museum / Computer History Museum

She attended DePaul University and earned a B.S.

in Mathematics in 1943 and an M.S.

in Mathematics and Physics in 1953.

After that, she worked in the computer science center at the National Science Foundation workshop.

Alongside John G. Kemeny and Thomas E. Kurtz, Keller created BASIC.

Before the inception of BASIC, only mathematicians and scientists could program software.

BASIC became a groundbreaking language that allowed anyone to create custom software.

For the first time, we can now mechanically simulate the cognitive process.

Keller established a computer science department at the Clark College Catholic school for women.

They told me computers could only do arithmetic.

Grace Murray Hoppers many accomplishments paved the way for advancements in various sectors we know today.

From the military to technology, she has been internationally recognized for her work.

But its those studies that led to her referral as the first computer programmer.

Understandably, the machine was thought of more as a mathematical and scientific tool at that time.

However, Lovelace believed that the machine could do more than calculations.

Ada Lovelace developed the first algorithm to be performed by the machine.

Your best and wisest refuge from all troubles is in your science.

For more, look at themost important women in the history of video games.