Information processing unit, information processing system, method of correcting abnormality of christian calendar year in information processing unit, and computer readable record medium having christian calendar year abnormality correction program recorded therein

Abstract

An information processing unit is provided which executes various information processing by using Christian calendar year/date information and comprises a memory part, an application processing part for performing processing by using lower-two-digit Christian calendar year information, and a file access control part for writing/reading file format data to/from the memory part in response to a request from the application processing part. The file access control part includes a judgment part which upon a receipt of a request to read Christian calendar year information within a file from the application processing part, judges whether the Christian calendar year information indicates a predetermined Christian calendar year onward, and a read Christian calendar year information output part which when it is judged that the Christian calendar year information indicates a predetermined Christian calendar year onward, generates Christian calendar year information having identification information indicative of that fact, to output it as read Christian calendar year information. Thus, a distinction between the year 1900 and the year 2000 is effected through only the lower-two-digit management of Christian calendar year information by software and hardware.