555 IC having dip-8 is very popular IC. 555 IC have many different industrial application and is is used to generate a time delay . delay generated by 555 timer is very accurate and we can generate different frequency.Popular project based on 555 IC is darkness activation system, and Sireon blinker.
555 is a timer, pulse generation IC.
This IC is used to provide a time delay in any basic electronic circuits with right choice of resistors and capacitors.