摘要
数据选择器作为数字电路中的组合逻辑主要集成元件之一,除了具有传统的数据传输和分配功能之外,还可用作逻辑函数发生器。以中规模集成数据选择器74LS157和74HC151为例,通过3个实例详细介绍以上2种功能,更好地理解和扩展集成器件的性能和用途,达到举一反三、灵活运用的目的。同时,使用数据选择器和译码器在实现组合逻辑函数功能方面也越来越受到重视。
A Multiplexer,which is one of the most important IC digital combinational device, it can act as logic function generators besides its traditional functions of data transfer and distribution. This article deals with the above functions in detail with three practical examples of medium- scale integrated circuit multiplexers 74LS157 and 74HC151, therefore making a further understanding with the characteristics and applications of IC devices, which can make the readers use these IC devices freely and neatly. Meanwhile,the applications of selectors and decoders have occurred on the papers of digital circuits in the graduate qualification examinations in some university.
出处
《现代电子技术》
2006年第8期15-16,21,共3页
Modern Electronics Technique
