| 摘要 |
Following the insertion of a trial key or a license key into a port, authentication thereof is executed (S 4 , S 22 ); if the trial key authentication is successful, a trial time limit is obtained by adding a trial permission period to a current time and is stored into a nonvolatile memory (S 25 ); if the current time exceeds the trial time limit (S 12 , S 13 ), or the license key authentication is successful, the trial state information is changed to indicate "trailed" (S 4 ); if the license key authentication is successful (S 14 ), or the trial key authentication is successful (S 15 ) and the trial state information does not indicate "trialed" (S 16 ), an optional routine is executed following an instruction from a control panel. In that routine, if the trial state information does not indicate "trialed", the trial time limit is displayed on a control panel.
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