There are so many things that IC555 could apply to that this question almost makes no sense. However, the most likely answer is that IC555 refers to the NE555 / LM555 integrated circuit timer chip. This very popular chip can, with about five external components, easily be used to make square waves anywhere from a megahertz down to less than a hertz. A slight rearrangement of components will change it to an single pulse generator. And it runs on any clean DC voltage from about 5 to about 18 volts.
NE555 and IC555 are the same and there is no difference (Jeph)
it is astable operation to produce clock pulses for the counter
Change as time from low to high voltage and opposite
IC 555 is a simple timer integrated circuit device and used for traffic light timing to control traffic flow.
A Universal is a choice of words but this chip is widely used as a timer the accuracy for long elapse time is very good so that is widely used
The 555 is a timer integrated circuit. The 741 is an operational amplifier (op amp) integrated circuit. Both are some of the most popular 8 pin integrated circuits ever produced.
An IC 555 is used as as a timer, as an astable and monostable multivibrator and as a square wave generator.
The 555 multvibrator chip can be operated in monostable mode (one pulse at a time) Or in Astable mode (retriggers itself in freerun mode) This IC puts out a nice clean square wave . The output of this chip is capable of driving a small speaker.
it is DC powered, but can generate sawtooth or triangular wave AC if wired up properly. it cannot generate sine wave AC, although with an opamp wave shaping circuit the triangular AC waveform can be reshaped to a rough approximation of a sine wave.