| 摘要 |
PROBLEM TO BE SOLVED: To provide a board with copy preventing function, in which even if hardware is dead-copied, the dead copy does not operate. SOLUTION: Identification data based on an operation output characteristic preliminarily measured for a DAC (Digital Analog Converter) 4 which is stored in a memory 6 within a substrate is compared with measurement data based on a result of measurement of operation output characteristic value of the DAC 4 performed when starting a program or during execution of the program, and the execution of the program is continued only when the identification data and the measurement data are within a matching range. COPYRIGHT: (C)2010,JPO&INPIT |
