(1) For the VR headset, see
Visor 4K.
(2) An early PDA originally from Handspring, Mountain View, California that was introduced in 1999 by the inventors of the PalmPilot. Based on Palm OS, it was the first handheld to use USB. Visor had an expansion slot to accommodate hardware and software modules for business software, games, GPS, MP3 players and digital cameras. In 2002, the Visor was replaced with the Treo smartphone. See
Palm Incorporated.
The Visor
The Visor was expandable via its Springboard expansion slot, which in this case held the Yada Yada wireless modem. (Image courtesy of Yada Yada Inc.)