在工业控制、移动通信对象选呼及军事通信的特定场合,编码选通开关有着广泛的用途。以往用小规模脉冲数字电路组成的编码解码选通开关,由于逻辑关系繁杂,所用器件数量大,成本高等原因使应用受到了很大的限制。我们采用可编程序的Intel 2716EPROM只读存贮器,作为主要器件组成的键盘控制编码解码选通开关电路,可靠的实现了键控选通的目的。 In the particular case of industrial control, selective calling of mobile communications and military communications, coded strobe switches have a wide range of uses. In the past, the code-decoding strobe switch composed of small-scale pulse digital circuits was greatly restricted due to the complicated logic relationship, the large number of devices used and the high cost. We use the programmable Intel 2716EPROM read-only memory, as the key components of the keyboard control code decoding strobe switch circuit, the reliable realization of the key gating purposes.