speech. The childs Navi that Lain used to use was modeled  after the 20th Anniversary Macintosh. The HandiNAVI, the handheld  computers which both Lain and Arisu used was based off the Apple  Newton, the first PDA. Navis and Macintoshes are both built by  companies named after fruit, Tachibana (a type of orange) and Apple,  respectively.