 The first @-@ generation iPad ( / <unk> / EYE @-@ pad ) is a tablet computer designed and marketed by Apple Inc. as the first in the iPad line . The device features an Apple A4 processor , a 9 @.@ 7 " touchscreen display , and on certain variants the capability of accessing cellular networks . Using the iOS operating system , the iPad can play music , send and receive email and browse the web . Other functions , which include the ability to play games and access references , GPS navigation software and social network services can be enabled by downloading apps . 
