| 摘要 |
<p>Data Processing Device A data processing device comprises a control device, a non-volatile first memory for storing at least one file, a function module coupling device for at least one function module and a display device. Said function module has a non-volatile second memory in which a data element representing a positive credit value is stored. The control device represents the data of the at least one file stored in the first memory by means of a display device and reduces the credit value stored in the second memory according to the period of time for which the data are represented or according to the volume of data used, until the credit value is less than or equal to zero. Figure 28</p> |
