SIMpad

The SIMpad is a portable computer developed by the company Keith & Koep by order of Siemens AG, with an 8.4" TFT touchscreen. Commonly used with wireless network cards, it was marketed as a device to browse the World Wide Web. Initially announced in January 2001 at the Consumer Electronics Show.

There are five known model variants, all out of production:

CL4: The low-end model with 32 MB RAM and 16 MB Flash ROM without PC card slot but with DECT modem.
WP50: A variant sold by Swisscom. Same as the CL4.
T-Sinus Pad: A variant sold by Deutsche Telekom. This one is the same as the CL4 but with a PC card slot.
SL4: The high end model, with 64 MB RAM and 32 MB Flash ROM. This one also has a PC card slot.
SLC: Identical to the SL4, but with the addition of a Siemens MD34 DECT modem, allowing connection to certain Siemens ISDN telephone systems.

All variants contain:

An Intel StrongARM#SA-1110 SA-1110 32-bit RISC processor with a clock frequency of 206 MHz
An 8.4" TFT LCD with an SVGA resolution
4-wire analog resistive touch interface
A single 16-bit PC card slot
A standard ISO/IEC 7816 SmartCard interface
A USB 1.1 client interface
An IrDA interface
A serial interface
A 7.2 V 2800 mA·h Lithium Ion Battery
A built-in mono speaker
A built-in microphone
A headphone interface

All devices weigh approximately 2.2 lb and measure 10.35 × 7.08 × 1.10 inches. The SIMpad was initially released with the Handheld PC 2000 operating system, while later units were released with Windows CE.NET. Since the SIMpad was discontinued in 2002, all manufacturer support was also discontinued.
The project offers a SIMpad related Wiki where one can find information about Linux, Windows CE, hardware and mods.