What is the importance of ICs and LEDs in electronics?

Answer 1

Integrated circuits (ICs) are an important part of electronics because they allow the compression and modularisation of more complex circuits. This has 3 major impacts on the electronics industry:

# Circuits which make use of ICs will occpy less space. # Smaller circuitry allows for more efficient digital signal processing (DSP) - by effectively lowering the stray reactance and potential for noise in the circuit. # They allow big electronics companies to produce low cost electronics products for retail. Light emitting diodes (LEDs) used to be a great deal less efficient than they are now, and they can now achieve higher frequency bands. Because this technology is always on-going and red LEDs have been used for a long time in CD technology the improvement of this technology is what has prompted the BluRay as blue light gives a much higher bandwidth than red light. Note that there are still indigo and violet above blue in the colour spectrum - so BluRay is far from the close of CD technologies. LEDs are also important as indicators, and can now be used as efficient replacements for filament bulbs (given they have a better ratio of light:heat transfer).