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555 timer IC - Wikipedia Images Source: sphm 、 likecool 車子,永遠是男人的第二個女人 在國內,週休二日的旅遊意識抬頭、除了北高兩市擁有較為便捷的大眾運輸工具之外,考量到更為彈性的時間運用,自己開車出去玩還是大多數人的首選。而在國產車與進口The 555 timer IC is an integrated circuit (chip) used in a variety of timer, pulse generation, and oscillator applications. The 555 can be used to provide time delays, as an oscillator, and as a flip-flop element. Derivatives provide up to four timing cir...
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