The reason is simple, around 80% of all personal computers are used primarily for word processing or related tasks.
The diary is used for recording lessons and tasks given each day.
While this was happening the computer could not be used for other tasks.
Thus it can be used for non-web tasks as well.
In the ensuing century the unit was used for various tasks.
People will use it for tasks as they come up through the day and evening.
As in recent years, the diary room was used for several tasks.
This display is used for tasks such as sample selecting.
These were products which could be used for various tasks, and in whose whereabouts, therefore, we had to take an interest.
A job description is a list that a person might use for general tasks, or functions, and responsibilities of a position.