| 摘要 |
PROBLEM TO BE SOLVED: To provide a game machine that normally works by eliminating an adverse effect caused by noises. SOLUTION: In addition to capacitors C1 and C2, a capacitor C3 is connected between a VDD terminal and a VBB terminal of MPU11. So even if a noise is added to the MPU11, the difference of voltages input to the VDD terminal and the VBB terminal is stopped within a predetermined value, in other words, the noise added to the MPU11 can be eliminated or restrained to normally back up the data of RAM12. In addition, the respective capacitors C1 to C3 can improve the noise elimination effect more by approaching to and connecting with the MPU11 as much as possible and by using better frequency characteristics. COPYRIGHT: (C)2011,JPO&INPIT
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