ALSO CALLED: Personal Digital Assistant Operating Systems and Wireless Operating Systems
DEFINITION: Palm OS is the computer operating system that provides a software platform for the Palm series of handheld personal digital assistants (PDAs) made by Palm Inc. According to Palm, Palm OS was designed from the beginning to fit into a palm-size device of a specific size and with a specific display size. Microsoft's Windows CE and Symbian's EPOC  … 
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PDA OPERATING SYSTEMS DEFINITION (continued): …  (originated by Psion) are also operating systems for handheld devices, but are designed to serve a broader range of devices.

Palm OS uses multitasking, but only one task is for applications. The user uses one application at a time, one application program must finish before the next can be selected. This constraint allows the operating system to devote full attention to the application that is open. The space needed by the system for any application that is running is kept in dynamic, reusable random access memory (RAM). The application and its related database … 
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