NE555 Timer IC (2 in pack)

The “triple-five” 555 timer IC, found on almost every hobbyist’s electronics bench, is one of the most popular ICs in use. This timer gets its name from the three 5kΩ resistors employed in the internal structure of the IC.

With the 555 Timer, you can easily generate all sorts of varying waveforms with just DC voltage sources! A whole lot of fun and useful circuits can be built from this such as flashing lights, timed switches, delay switches, function generators, alarms, sirens, electronic piano etc.!

NE555 is a popular package of this IC.