Abstract: The present invention relates to a printer being capable of parsing, understanding and evaluating multiple target package files that include printing resources not only for a single printer or for a single type of printer, but for multiple printers or multiple types of printers. For this purpose, the package file is augmented with platform information that is separately associated with each printer resource included in the package file. Thereby, the parser of the printer can discriminate whether or not a particular resource is applicable to itself. Consequently, only the resources such as firmware are installed that are valid and applicable to the printer. In the same manner, the resources can also be augmented with individual printer information, so as to indicate different resources to be installed on different printers, even if they are of the same type.

Abstract: Disclosed is a device that changes a bit in a string of bits representing a character in a sting of characters defining a reserved word associated with a record containing pieces of information in response to a request for changing a piece of information in the record, and a printer configured to exclude from printing a record associated with a reserved word that has been changed by the device.

Abstract: A data updating device with which the amount of time required to update data in a flash memory can be shortened and reductions in the life of the flash memory can be suppressed. The data updating device modifies a description content of record unit data that are described in a markup language and stored in a flash memory, and includes: a reserved word modifier for modifying a bit of a binary representation of character strings constituting the reserved words from 1 to 0 when a request is issued to update a description sandwiched between reserved words and corresponding to a record; and a data adder for additionally recording, in the flash memory, the record corresponding to the description sandwiched between the reserved words and including the part modified in accordance with the request.