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Palm OS

Palm OS is an operating system made by PalmSource, Inc. for personal digital assistants (PDAs) manufactured by Palm, Inc. and other companies. The Palm OS was designed to provide Palm units with basic functions such as handwriting recognition, display control, and interface standards. Palm PDAs typically come with several basic productivity applications, such as:
  • Address
  • Calculator
  • Date Book
  • Expense
  • Memo Pad
  • Note Pad
  • To Do List

Table of contents

Applications for Palm


The Palm's Address program stores personal information, keyed by any of several user-definable categories. Entries are displayed and sorted in last name, first name order (this can be changed only to Company, Last Name order). There are five slots for phone or e-mail, each of which may be designated Work, Home, Fax, Other, E-mail, Main, Pager or Mobile (the slot designations cannot be changed). You can also attach a note to an entry.


Calc 4.0 turns the Palm into a standard 4-function pocket calculator with three shades of purple and blue buttons contrasting with the two red clear buttons. It sports square root and percent keys and has one memory.

Date Book

Date Book shows a daily or weekly schedule, or a simple monthly view. The daily schedule has one line per hour, between user-selected begin and end times. Clicking on an empty line creates a new appointment. Empty lines are croweded out by actual appointments, whose start and stop times are shown by default bracketed in the left margin.

An appointment can be heralded by an alarm, any number of minutes, hours or days before it begins. These alarms sound even when the unit is switched off.

Appointments can recur in a specified number of days, weeks, months or years -- and can contain notes.


The Expense application allows a user to track common business expenses. No totals are calculated on the Palm. The user must synch with a host computer and view the expense data in a worksheet (templates for Microsoft Excel are supplied).

Memo Pad

The Memo Pad can hold notes of up to 4,000 characters, keyed to user-configurable categories. Memos are ordered in two ways: alphabetically, and manually (which allows the user to choose the order of the memos). Memo Pad is for text, not for drawings. For this reason, text in Memo Pad must be entered using the Graffiti alphabet.

Note Pad

Drawings go in Note Pad. You can squeeze up to 10 words per page, if your writing is neat. Otherwise, it's better to put text in Memo Pad. There are three sizes of drawing crayon, plus an eraser. It's possible to draw a very simple map.

To Do List

Also referred to as Task list[?].
This is a convenient place to create personal reminders and prioritize the things you have to do.
Each To Do List item may also have: a priority, categories (to organize and view items in logical groups), attached Note (to add more description and clarification of the task).
To Do List item can be sorted by: due date, priority or category

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