Tristan Walker founded Code2040, an internship program designed to bring Latino and black engineering undergrads to Silicon Valley. David Paul Morris/Bloomberg via Getty Images hide caption

itoggle caption David Paul Morris/Bloomberg via Getty Images

Brooke Hammerling, the founder of Brew Media Relations, says she created her own firm because she got sick of a mix of dismissive tech guys and sexism inside some companies. Christof Stache/dpa/Landov hide caption

itoggle caption Christof Stache/dpa/Landov

Taneka Armstrong, 20, is learning about different aspects of the tech industry — from coding to sales — through the nonprofit group Hack the Hood. Aarti Shahani/NPR hide caption

itoggle caption Aarti Shahani/NPR