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Question :
what is 555 timer

Posted by: ram pravesh on 5/13/2015

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Category Electronics Interview Questions
Rating (3.3) By 23 users
Added on 5/13/2015
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555 timer is used to generate time delay and also used as counter

Posted by: jayashankar

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The 555 Timer IC is an integrated circuit (chip) implementing a variety of timer and multivibrator applications.The 555 has three operating modes:MONOSTABLE,ASTABLAE,BISTABLE
In the monostable mode, the 555 timer acts as a ?one-shot? pulse generator. In bistable mode, the 555 timer acts as a basic flip-flop.In astable mode, the '555 timer ' puts out a continuous stream of rectangular pulses having a specified frequency

Posted by: SARANYA


It is a 8 pin IC that has been out there for about 30 years. It was known as a National LM555 IC. It required about 4 or 5 resistors and caps.
It once setup would toogle HI or LO for a given period of time. Common use for for a one shot or switch debounce circuit

Posted by: Donn Washburn aka n5xwb

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