| 摘要 |
PROBLEM TO BE SOLVED: To surely prevent the input of a fraudulent signal into a game control means from the outside of a game control board. SOLUTION: In a main board 31, an information output circuit 34 outputting a signal from a game control microcomputer to an information terminal board 34, a lamp circuit 36 outputting a signal to an ornament lamp board 79, and an output buffer circuit 67 outputting a signal to a performance control board 80 are constituted of a unidirectional circuit allowing the signal to pass only in the direction of heading for a centralized relay board 77. The centralized relay board 77 is mounted with a unidirectional circuit allowing the signal input from the main board 31 to pass only in the direction of heading for peripheral boards (the information terminal board 34, the ornament lamp board 79, and the performance control board 80). The performance control board 80 receives a response signal of a voice control command from a voice control board. COPYRIGHT: (C)2006,JPO&NCIPI
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