Physics
An integrated circuit is more advantages than a coventional circuit because

They make the electric equipments more reliable and easier for servicing
All listed here
If a part of the integrated circuit fails the entire circuit is simply replaced
A faulty part of a conventional circuit may be difficult to locate and repair

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Physics
Superconductors are those elements

Whose conductivity is intermediate between metals and insulators
Which conduct electricity only at super-high temperatures
Which turn into insulators at very low temperatures
Whose resistance falls almost to zero at very low temperatures

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