一种新颖实用的巡回传输开关电路

A Novel Practical Circuit Transmission Switch Circuit

"多选一"巡回传输开关在日常生产生活中应用非常广泛,设计各异的电路也多种多样,尤其是基于单片机的设计电路其硬件电路更为简洁,但是单片机控制程序有时候存在"死机"的问题,使得用户在某些场合心存疑虑,而用TTL设计的控制电路就没有这样的问题,而且简单实用,可靠性更好。

The ＂choose one＂ circuit transmission switch is widely used in daily production and life. The design of circuit is also varied, especially the circuit based on single chip circuit design, the hardware circuit of it is simple. But the single chip microcomputer control program is sometimes found ＂crash＂, and the user in some occasions are doubt about it. There will be no this kind of problem with the control circuit designed by TTL, and it is simple, practical, and better reliability.