HP (NYSE: HPQ) and Cisco (NASDAQ: CSCO) are generally considered mature technology plays, which implies they offer income instead of growth. But over the past 12 months, HP has bucked expectations and rallied 30%, while Cisco has stayed nearly flat.Let's find out what fueled HP's rally, and what weighed Cisco down -- and see if those factors make the PC maker a better long-term play than the networking equipment specialist.Source: Getty Images.Continue reading