型号

倒计时ic

型号 vs**** 日光电子有限公司
封装 裸片
1.5v 4位 两款                                                                                                                                                                                                                        1.99小时59分倒数/正数功能;                                                                                                                                                                                                2.99分59秒倒数/正数功能;
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