Psion Siena

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Psion Siena
Image:Psion Siena.jpg
Manufacturer	Psion PLC
Type	PDA
Connectivity	Serial, 19200 bit/s RS-232C
Retail Availability	1996
Operating System	SIBO
Camera	N/A
Media	Psion Solid State Disks (optional)
Input	QWERTY keyboard Numeric Keypad
Power	2 × AAA battery
CPU	NEC V30H @ 7.68 MHz
Display	240 × 160 monochrome LCD
Touchpad	N/A

The Psion Siena is a personal digital assistant made by Psion PLC and was released in 1996.

The Siena was of the same generation as the Psion 3 series but featured a reduced size screen (240x160 pixels) in comparison to its larger cousin due to the presence of an additional numeric pad situated next to the screen. The Siena uses the same 16bit NEC V30 processor as its predecessor the Series 3a. Although the Siena shared binary compatibility with the Series 3 many programs need to be recompiled due to the lower memory availabilty and smaller screen sizes.

Two versions of the Siena were released, one containing 512KB of memory and the second with 1MB.

Power was provided by two AAA batteries and one cell style backup battery.

Unlike the Series 3 the Siena did not feature a built-in solid state disk drive however an external model was available and connected via an RS-232 serial port. The serial port also provided PC connectivity if used with the separately available PsiWin software and dial up access via the Travel modem accessory. Additional connectivity was available via the included Infrared port which was located alongside the serial port.

The device was used as a model for a device in Anarky (vol.1) #3 , Metamorphosis: The Economics of The Madhouse, a DC comic book. The character, Anarky, is seen tracking Batman's movements using the small PDA.