https://sk.wikipedia.org/wiki/Android_%28opera%C4%8Dn%C3%BD_syst%C3%A9m%29
https://www.zive.sk/clanok/54804/programy-ktore-by-nemali-chybat-vo-vasom-pocitaci
https://www.google.sk/search?q=softver&biw=1527&bih=863&source=lnms&tbm=isch&sa=X&ei=L5eQVMPvNYr3UPGMg4gB&sqi=2&ved=0CAYQ_AUoAQ#tbm=isch&q=software&revid=1498586538&facrc=_&imgdii=_&imgrc=Mw9Eom16GvcBIM%253A%3BEm29dcjYCLBucM%3Bhttp%253A%252F%252F2.bp.blogspot.com%252F-R5qsBPCH-1s%252FU4TTd2c-VwI%252FAAAAAAAABTM%252Fs524BN4slXE%252Fs1600%252FJenis%252BSoftware%252C%252BPerangkat%252BLunak%252BKomputer.png%3Bhttp%253A%252F%252Farekubl.blogspot.com%252F2014%252F05%252Fmengenal-software-komputer-perangkat-lunak-komputer.html%3B864%3B668