To carry out displaying in a display form identical to that used at the last access, without requiring labor hours for setting.

When the display form for displaying measured data sets of respective channels is set by a setting means 11, a data display system 1 starts a browser of a terminal device 4, thereby displaying the measured data sets of the respective channels on a display screen in a displaying format being set by the setting means 11. When the access of the measured data sets is completed, information about the display form at that time is written into a memory means 13 of a data recording device 3 by a communication command from the terminal device. When the browser is started in order to access the measured data sets again, the terminal device 4 demands the information about the display form from the data recording device 3 and receives the demanded display form from the data recording device 3, thereby displaying current data sets in the displaying format on the basis of the received display form identical to that used at the last completion of the access.

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