Verdict:
Not as flashy or cutting edge as HP's 620LX HPC, but the Cassiopeia still has all the advantages of Windows CE 2 in a workable package.
Last year saw some changes in the PDA market. First, US Robotics stomped in with the Pilot, which turned the PDA paradigm on its head; Psion then fought back with the Series 5, and Microsoft pushed into the brawl with Windows CE.
Now the smoke has finally cleared, it's surprising to see that some fighters are still standing. The Pilot is now under 3Com's control, the Series 5 has spawned a clone in the shape of the Geofox, and Microsoft - surprise, surprise - is attempting to control everything via an OS. Hardware vendors such as Philips, Hewlett-Packard, NEC, Compaq and others have all launched WinCE-powered HPCs, proving that Windows CE can't be written off. In fact, it's actually improved.
After the impressive debut last month of HP's 620LX (reviewed issue 41,p180), followed by Sharp's innovative HC-4500 (reviewed p167), this month it's the turn of Casio's Cassiopeia A-20. Although it certainly won't turn as many heads as either HP's or Sharp's models, it's more than £200 cheaper, is smaller and is a lot more likely to fit in the average pocket.
Opening up the Cassiopeia's stylish gunmetal grey case, you might think there's been a mistake when you switch on the power. But Casio has made a deliberate choice to go with a four-greyscale 640 x 240 screen, instead of the eye-opening 256 colours supported by the 620LX. It's a surprising choice, as WinCE 2 supports up to 16 shades of grey. Nonetheless, the Casio's display remains clear and usable, if a little too dim for anything below normal lighting conditions. To compensate, there's a backlight included which can be set to switch off after a user-definable idle period.
Casio claims the Cassiopeia will run for 25 hours on two AA batteries. Of course, heavy use of the backlight, the Type II PC Card slot and the PC connector cable will diminish this. Curiously, as the batteries ran low on our test model, the backlight developed an attitude, switching off after only a few seconds of use and refusing to come back into operation.
The Cassiopeia's keyboard won't win many fans. The keys are reminiscent of a scientific calculator keyboard. It's
SPECIFICATIONS:
Hitachi SH3/75MHz RISC processor, 8Mb of RAM, 8Mb of ROM, four-greyscale 640 x 240 pixel screen, one Type II PC Card slot, 115Kbits/sec infrared serial port, RSC232c serial port, CompactFlash card slot, integrated speaker and microphone, takes two AA batteries. Dimensions: 185 x 94 x 24.5mm (W x D x H). Weight: 430g.