FIELD: memorizing equipment engineering.
SUBSTANCE: data carrier for being read by computer has data structure for providing for permanent storing of a data set and has at least the oldest version of said data set in first memory area, at least one tag for identification of said version, at least latest in time of update version of said data set in the second one, different form the first one, memory area, at least one tag for identification of said latest in time updated version. Computer device has processor and at least one said carrier being read by a computer. Also included is description of operation of computer device.
EFFECT: elementary data updating and higher safety of data stored in memory.
3 cl, 5 dwg
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