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