| 摘要 |
A method, apparatus, system, and signal-bearing medium that, in an embodiment, determine whether an amount of usage of a resource, which is used under a temporary usage plan, exceeds a threshold. If that determination is true, a quantity of the resource is calculated and that quantity is converted from the temporary usage plan to a permanent usage plan, without further charge to the customer. In another embodiment, a different resource may be converted to the permanent usage plan than the resource that was temporarily used. In various embodiments, the calculation of the quantity is made based on an attribute of the computer that uses the resource or based on an activation code received from the provider of the resource. In various embodiments, the amount of the usage is either a time amount of use or a monetary amount charged for the resource under the temporary usage plan. In various embodiments, the quantity of the resource converted is based on a ratio of a number of permanent resources in use to a total number of resources, based on an attribute of the computer, based on the cost of the computer, based on the age of the computer, based on a speed of the resource, or based on the amount of resources in the computer.
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