
8.3 The Palm OS operating system
Palm OS is the product of Palm Inc. and has less than 10 per cent market share today, which has
fallen from around 70 per cent earlier. The latest version is 5.4. It is based on a 32-bit architecture,
which allows 4 GB of address space to be accessible and provides excellent power management,
efficient memory utilization and ease in programming. It also has enhanced security features, like
locking of the device, passwords, data encryption, wireless Internet and e-mail access. Figure 8.2
gives the hierarchical structure of the Palm OS operating system. We shall discuss some of the
blocks shown in Figure 8.2 in some detail ...