Casio Cassiopeia


Cassiopeia was the brand name of several PDAs manufactured by Casio. Earlier models ran the Windows CE operating system, with later versions running Pocket PC or Windows Mobile. Casio was one of the first manufacturers of PDAs, developing at the beginning small pocket-sized computers with keyboards and grayscale displays and subsequently moving to smaller units in response to customer demand.

Cassiopeia A-10, A-11 and A-11+

Cassiopeia A-20, A-21S, A-22T, A-23G

It was quickly discovered that most consumers wanted smaller devices, so the Palm-size PCs were developed. Japanese models of these units differ in both model number as well as appearance. The E-5x and/or E-5xx models are Japanese versions, colored blue instead of silver. The following versions were developed; A21-S for Student, A22-T for Teachers, A-23G for German, A-20F for French.

Cassiopeia A-50, A-51, A-55 and A-60

Cassiopeia E-10

Cassiopeia E-11

Cassiopeia [|E-15]

The Cassiopeia E-15 was the last model of Palm-size PC introduced by Casio that used a grayscale display. It appeared at the same time as the E-105, and functioned identically to that device, except for the screen.

Cassiopeia E-100

The first Palm-size PC model by Casio to have a color screen, the E-100 was outwardly identical to the E-15.

Cassiopeia E-105

Cassiopeia E-115

Casio always advertised the fact that their devices could be updated. Casio decided it would not issue an update for the E-100 and E-105, and a lot of owners of the devices complained. Because of the complaints, Casio offered to update the devices to the newest version of the operating system if the owners sent in the device and paid a fee. Since the operating system was stored in ROM and not flash memory, the only way to upgrade was by replacing the ROM.

Cassiopeia E-125

After using the MIPS processor in the E-15 and the E-1xx series devices, the E-200 switched over to the StrongARM CPU, in keeping with Microsoft's specifications.

Cassiopeia E-200

Cassiopeia Fiva

The Cassiopeia Fiva family was a series of subnotebook PCs.
The Casio Cassiopeia Fiva MPC-205E/ MPC-206E / MPC-216XL used the Transmeta Crusoe CPU.
Other Casio Cassiopeia Fiva devices used the Cyrix MediaGX CPU.

Successors of the Cassiopeia E-200

After experiencing difficulties in the market following the release of the E-200, Casio decided not to produce any further units for the US and European markets, instead focusing on the Japanese market. Japanese-only models included the Cassiopeia E-3000, which ran the Pocket PC 2002 operating system, and the DT-10, which ran Windows Mobile 2003.

Other models

  • Compaq C120/C140/C120+ are rebranded equivalents to the Cassiopeia A-10/A-11/A-10+.
  • E-55 Japanese version of the E-15
  • E-707 Japanese model with wireless/phone antenna and both SD and CF card slots.
  • E-5xx Japanese versions of the E-1xx models.
  • EM-500 USA model, slightly smaller than the USA E-1xx with 16 MB RAM and came in multiple colors.
  • E-700 Japanese version of the EM-500, but with 32 MB RAM and came in many additional colors like white, carbon, silver.
  • E-750 Japanese successor to the E-1xx series with 32 MB RAM and a 200 MHz MIPS CPU.
  • E-3000/3100 Later Japanese model with 400 MHz XSCALE CPU and CF + SD card slots. 3000/3100 ran PPC/CE.NET respectively.
  • SX-45 designed in cooperation with Siemens, this is a Cellphone integrated with an E-125.
  • BE-300 Pocket Manager running on Windows CE 3.0 with a Casio-designed user interface. Released in 2001.
  • PA-2400W
  • IT-10 M20 from 2005 Rugged Windows Mobile 2003/2 416 MHz Intel PXA270 64 MB RAM, 64 MB ROM 3.7-inch VGA Transflective screen with 2,300 mAh lithium-ion battery & CompactFlash and SDIO slots