这是一个具有高精度与高灵活性的单片IC时基发生器。在做电子实验时常常需要一个稳定的基准频率,但实现这一点有时是不容易的。通常产生基准频率有两种方法:晶体时基或工频分频,晶体时基相当昂贵,工频分频往往需要两至三个IC才能从60Hz电源中取得1Hz或10Hz的频率。然而,用一只CMOS集成电路能廉价地完成这项工作。 This is a monolithic IC time base generator with high accuracy and flexibility. It is often necessary to have a stable reference frequency when doing electronic experiments, but sometimes it is not easy to achieve this. Usually there are two ways to generate the reference frequency: the crystal time base or frequency divider, the crystal time base is quite expensive, frequency division often requires two or three IC to get 1Hz or 10Hz frequency from 60Hz power supply. However, using a CMOS integrated circuit can do it cheaply.