She stared at the ring of sweat her glass had made on the counter.
她盯着自己的酒杯在柜台上留下的一圈水珠看。
This paper is concerned with three TTL D flip-flops and six Decoders which are buith by Ring counter design.
本文是关于采用三个TTL D触发器和六个译码器来组成扭形计数器的设计。
The circuit is a conventional ring counter .
此线路是一个普通的环形计数器。
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