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十进制计数/脉冲分配器除了进行十进制计数以外,还广泛地应用于各种控制电路中,例如霓虹灯控制以及一些设备的循环动作控制等。十进制计数/脉冲分配器的代表为集成电路CD4017。该IC具有Y0到Y9十个输出端,在组成控制电路时,有时候这十个输出端不够用,特别是在比较复杂的控制电路中,往往要求几十个输出端顺序输出才能满足控制要求。这就需要采用多片IC进行扩展连接,实现多路顺序循环输出功能。本文介绍了一个实用的四十路输出扩展电路,以供参考,根据这种思路,可以任意扩展到所需要的输出数。
In addition to the decimal count, the decimal count / pulse divider is also widely used in various control circuits such as the neon control and the cyclic operation control of some devices. The decimal count / pulse distributor is represented as IC CD4017. The IC has Y0 to Y9 ten outputs, the composition of the control circuit, sometimes the ten output is not enough, especially in the more complex control circuit, often require dozens of output sequence output to meet the control requirements . This requires the use of multi-chip IC expansion connection, to achieve multi-cycle output function. This article describes a practical forty-output expansion circuit, for reference, according to this idea, can be arbitrarily expanded to the required number of outputs.