Electronics Engineering Question:

How to program Micro controller?

Answer:

A Micro controller can be directly connected to external devices. But a Processor needs a interface controller to connect with external input and output devices.

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When a small amount of Cu is added to a Ni conductor, then the?

a) Resistivity of Ni will decrease at all temperatures because Cu is better conductor than Ni

b) Residual resistivity of Ni at low temperatures will increase as Cu atoms acts as defect centers

c) Resistivity of Ni will increase at all temperatures as Cu destroys the periodicity of Ni and acts as defects

d) Resistivity of Ni remains unaltered as Cu atoms give the same numbers of free electrons as Ni atoms