Bill Gates is one of the most influential figures in the world of technology, co-founding Microsoft and building it into the world’s largest PC company. Gates is credited with bringing the personal computer to the mainstream, and in doing so amassed a personal fortune worth more than $80 billion.

After stepping down from Microsoft, Bill Gates stepped up his philanthropic efforts, and today the Bill and Melinda Gates Foundation is one of the largest in the world, supporting education, scientific research, and efforts to eradicate poverty around the globe.