Although some newer laptops are coming out with reminders, you still have the problem of actually taking it with you wherever you go. The PDA has a program already installed on it when you purchase it called a task manager. As well as appointment book. This allows you to keep up with appointments and tasks that are upcoming.
The PDA can also be set to remind you of certain events that are coming up, that you don't want to forget such as an important meeting right down to a birthday. You can set a reminder tone on the PDA that will go off, and this of course lets you know of the appointment or specific date you wanted to remember. It will also do this if you set it in the morning, for say picking up files from an office at three that afternoon. The PDA will go off thirty minutes before whatever it is you have to do. The PDA can also be set days in advance for an appointment, this way your schedule is always at hand.
The PDA can come in handy if you have several things you have to do in one day as well. You can list everything you need to do for that day either the night before on that morning, then go by what is listed on your PDA and not forget absolutely anything. It is a good way to stay on schedule. Also, I should mention if your schedule changes it is very easy to delete or move an appointment on the PDA. Its just like a computer in the aspect of the way the program for the task manager is set up to function.
The scheduling program allows you to set dates well in advance and will keep track of those dates as they approach. You can also delete things on your schedule once the appointment is done, or if the appointment has been cancelled or changed. You have the option of changing the appointment you have scheduled as well. Most PDA's come with a task manager and sound alarms can go off letting you know of an upcoming task, as well as alerting you of appointments, meetings, even birthdays and anniversaries.
In the fast society now, it seems almost everyone goes by some sort of schedule, and by having a PDA and using it for this purpose, basically eliminates papers and pens that always seem to get lost, then you can't remember where or what time you were to be somewhere. Like going to the doctor, or a staff meeting. With a PDA you can stay on schedule and not be late.
The PDA stores the information on the memory and if it's a birthday or anniversary you are to remember you can actually use the settings so it is a reoccurring event, and select once a year and so forth. The PDA won't let you down in most cases as far as scheduling and things you have to remember to do, unless of course you forget to charge your PDA, if the battery is low, you can't use it very well.