Treo 90
| Industry | Consumer electronics |
|---|---|
| Products | Treo 90 |
The Treo 90 is a Palm OS personal digital assistant created by Handspring and launched on May 28, 2002. Notably, it stands out as the sole Treo version that does not include an integrated mobile phone and was the most compact Palm OS gadget available at the time of its release.
Design
Equipped with a 12-bit, 160x160 pixel color super-twisted nematic display featuring LED backlighting, the Treo 90 replaces the conventional Graffiti input with a compact QWERTY keyboard. It also includes an infrared communication port and supports external memory through an SD card slot.
ROM update
Initially running Palm OS 4.1H, the device lacked support for SDIO and encountered difficulties when formatting larger SanDisk memory cards. The Treo 90 Updater, which upgraded the ROM to version 4.1H3, addressed these limitations by enabling compatibility with SD cards up to 1GB in size.
This enhancement added SDIO functionality, permitting expansion via accessories such as the Palm Bluetooth card for wireless internet access and messaging through Bluetooth-capable phones. Additionally, it supported the MARGI Systems Presenter-to-Go card, allowing direct connections to digital projectors or VGA devices—significantly improving its usefulness for professional presentations.