Industrial PCs or single board computers (SBCs) often run only one or two applications. Normally, these combined applications or programs are less than 200 MB in size. On a normal hard disk drive this would require less than 2,5 GB of space if the operating system is WinXP.
In many cases, however, says Peet Smit of Centurion Micro Electronics, the system experiences shock and vibration or the physical size constraints make it difficult to fit a normal, or even a laptop-type hard disk drive. In these cases, using a CompactFlash instead of a hard disk drive seems to be the solution. Most SBCs have CompactFlash sockets on them, allowing the system to boot from these flash devices. The problem is, however, that WinXP together with the application requires a 3 GB CompactFlash, which is quite expensive.
Prices have fallen a lot over the years but for a 3 GB 'Industrial Grade' CompactFlash one is still looking at around R2600, says Smit. This is where XPembedded comes to the rescue. It is a highly configurable operating system which gives all the functionality of standard XP in an image size as low as 100 MB (typically around 250 MB). This means, says Smit, that the operating system and the application can easily fit on an affordable 512 MB CompactFlash card. Further, he adds, XPembedded offers other benefits compared to normal XP: it boots a little bit faster and also costs around 20% less.
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