[FightCube] wrote in recommending a very helpful piece of circuit simulation software for those of you still constructing entries for the 555 design contest. LTSpiceIV, available from Linear ...

When TV shows and movies need to use a phone number as part of the story, they typically use one that starts with 555. We spoke with an official historian at AT&T to find out why these three ...

五月天昨日舉行高雄首場演唱會。（圖／相信音樂提供） 一名網友以「五月天螢光棒555買or不買」為題在ptt發文，坦言自己只要看一場演唱會，不過 ...

As it turns out, the ever-useful 555 timer chip does the job admirably. It’s a simple enough circuit, the threshold pin is pulled high so the output goes high, and the PWM drive from an Arduino ...