On This Day

Microsoft is founded as a partnership between Bill Gates and Paul Allen to develop and sell BASIC interpreters for the A

Microsoft is founded as a partnership between Bill Gates and Paul Allen to develop and sell BASIC interpreters for the Altair 8800

William Henry Gates III is an American businessman and philanthropist. A pioneer of the microcomputer revolution of the 1970s and 1980s, he co-founded the software company Microsoft in 1975 with his childhood friend Paul Allen. Gates became the world's then-youngest billionaire in 1987, at age 31. This followed Microsoft's initial public offering in the previous year and subsequent stock increase. Forbes magazine ranked him as the world's wealthiest person for 18 out of 24 years between 1995 and 2017, including 13 years consecutively from 1995 to 2007. Gates became the first centibillionaire in 1999, when his net worth briefly surpassed US$100 billion.

Historical Significance

William Henry Gates III is an American businessman and philanthropist.

Key People

Bill Gates

businessman and philanthropist

American businessman and philanthropist

– present

Paul Allen

Athlete

American businessman

Events Before

  1. Ernie DiGregorio of Buffalo hands out 25 assists in the Braves' 120-119 win over Portland, establishing an NBA single-ga

    Ernie DiGregorio of Buffalo hands out 25 assists in the Braves' 120-119 win over Portland, establishing an NBA single-game record for assists by a rookie

  2. Lee MacPhail takes over as AL president, succeeding Joe Cronin

    Lee MacPhail takes over as AL president, succeeding Joe Cronin

  3. Science fiction TV series "The Six Million Dollar Man" premieres on ABC, starring Lee Majors

    The Six Million Dollar Man is an American science fiction and action television series, running from 1973 to 1978, about a former astronaut, USAF Colonel Steve Austin, portrayed by Lee Majors.

  4. Barbra Streisand's first #1 hit, "The Way We Were"

    The Way We Were is the fifteenth studio album recorded by American singer Barbra Streisand.

  5. Mel Brooks' western spoof film "Blazing Saddles," starring Cleavon Little and Gene Wilder, premieres at the Pickwick Dri

    Mel Brooks' western spoof film "Blazing Saddles," starring Cleavon Little and Gene Wilder, premieres at the Pickwick Drive-In in Burbank, California; patrons watch from horseback rather than cars

Events After

  1. Chai Jing is born

    Chai Jing, Chinese journalist and environmental activist, known for chinese journalist and environmental activist, was born on 1976-01-01. Chai Jing is a Chinese journalist.

  2. After 45 years of coaching, Paul Brown (Cleveland Browns; Cincinnati Bengals) announces his retirement from the National

    After 45 years of coaching, Paul Brown (Cleveland Browns; Cincinnati Bengals) announces his retirement from the National Football League

  3. Sarah Caldwell becomes the first woman to conduct at NYC Metropolitan Opera House, leading the orchestra in a performanc

    Sarah Caldwell becomes the first woman to conduct at NYC Metropolitan Opera House, leading the orchestra in a performance of "La Traviata"

  4. "I Write the Songs" cover by Barry Manilow hits #1

    "I Write the Songs" is a popular song written by Bruce Johnston. Barry Manilow's version reached number one on the Billboard Hot 100 chart in January 1976 after spending two weeks atop the Billboard…

  5. Bahamian-American actor Sidney Poitier (48) weds Canadian actress Joanna Shimkus

    Bahamian-American actor Sidney Poitier (48) weds Canadian actress Joanna Shimkus

More from the 1970s

Frequently Asked Questions

What happened on April 4, 1975?
William Henry Gates III is an American businessman and philanthropist. A pioneer of the microcomputer revolution of the 1970s and 1980s, he co-founded the software company Microsoft in 1975 with his childhood friend Paul Allen. Gates became the world's then-youngest billionaire in 1987, at age 31.
Why is Microsoft is founded as a partnership between Bill Gates and Paul Allen to de... significant?
William Henry Gates III is an American businessman and philanthropist.
Who was involved in Microsoft is founded as a partnership between Bill Gates and Paul Allen to de...?
Key figures include Bill Gates (businessman and philanthropist), Paul Allen (Athlete).

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