combinational circuit and sequential circuit

One can find information about a digital circuit on a number of different informational websites. One can find information on digital circuits on Wikipedia, HowStuffWorks, and Infoplease.

Both. An IC (integrated Circuit) is a compact form of several electronic circuits. These circuits may be analog or digital.

Data regeneration is not possible in analog circuits.Signals has degeneration and distortion so it causes noise.But in digital circuit signals are quantizated and regenerated even if they had corruption.

add a capacitor