http://es.wikipedia.org/wiki/Hardware
http://www.google.com.mx/search?pq=software+de+aplicacion&hl=es&sugexp=gsis,i18n%3Dtrue&cp=4&gs_id=k&xhr=t&q=hardware&gs_sm=&gs_upl=&biw=1024&bih=677&bav=on.2,or.r_gc.r_pw.&um=1&ie=UTF-8&tbm=isch&source=og&sa=N&tab=wi
http://es.wikipedia.org/wiki/Software_de_sistema
http://www.google.com.mx/search?ds=i&pq=hardware&hl=es&sugexp=gsis,i18n%3Dtrue&cp=13&gs_id=1l&xhr=t&q=software+de+sistema&um=1&gs_sm=&gs_upl=&bav=on.2,or.r_gc.r_pw.&biw=1024&bih=677&wrapid=tljp1315757993800020&ie=UTF-8&tbm=isch&source=og&sa=N&tab=wi
http://www.bloginformatico.com/software-de-aplicacion.php
http://www.google.com.mx/search?um=1&hl=es&tbm=isch&sa=1&q=windows&pbx=1&oq=windo&aq=1&aqi=g10&aql=&gs_sm=c&gs_upl=2258l6681l0l9128l5l5l0l1l1l0l332l1098l2-3.1l4l0&biw=1024&bih=677&cad=cbv&sei=eM5vTrqLLqXnsQKN-IHqCQ#um=1&hl=es&tbm=isch&sa=1&q=software+de+aplicacion&pbx=1&oq=software+de+aplicacion&aq=f&aqi=g6&aql=&gs_sm=e&gs_upl=3650l88020l0l88968l22l22l0l10l10l1l737l4494l0.1.4.2.3.1.1l12l0&bav=on.2,or.r_gc.r_pw.&fp=bfbfebd616609237&biw=1024&bih=677
http://es.wikipedia.org/wiki/Internet
http://www.google.com.mx/search?um=1&hl=es&q=internet&gs_sm=e&gs_upl=25045l27963l2l30043l8l8l0l0l0l0l616l1704l2-2.5-2l4l0&bav=on.2,or.r_gc.r_pw.&biw=1024&bih=677&ie=UTF-8&tbm=isch&source=og&sa=N&tab=wi
http://www.calameo.com/books/000728837520accb5209d
